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1.1 Computer Programs 2
1.2 The Anatomy of a Computer 3
CS 1 Computers Are Everywhere 5
1.3 The Python Programming Language 5
1.4 Becoming Familiar with Your Programming Environment 6
PT 1 Interactive Mode 8
PT 2 Backup Copies 9
ST 1 The Python Interpreter 10
1.5 Analyzing Your First Program 11
1.6 Errors 13
CE 1 Misspelling Words 14
1.7 PROBLEM SOLVING: Algorithm Design 15
CS 2 Data Is Everywhere 17
HT 1 Describing an Algorithm with Pseudocode 18
WE 1 Writing an Algorithm for Tiling a Floor 20
2 Programming With Numbers and Strings 23
2.1 Variables 24
Defining Variables 24
Number Types 26
Variable Names 27
Constants 28
Comments 29
CE 1 Using Undefined Variables 30
PT 1 Choose Descriptive Variable Names 30
PT 2 Do Not Use Magic Numbers 30
2.2 Arithmetic 31
Basic Arithmetic Operations 31
Powers 32
Floor Division and Remainder 32
Calling Functions 33
Mathematical Functions 35
CE 2 Roundoff Errors 36
CE 3 Unbalanced Parentheses 37
PT 3 Use Spaces in Expressions 37
ST 1 Other Ways to Import Modules 38
ST 2 Combining Assignment and Arithmetic 38
ST 3 Line Joining 38
2.3 PROBLEM SOLVING: First Do It By Hand 39
WE 1 Computing Travel Time 40
2.4 Strings 41
The String Type 41
Concatenation and Repetition 42
Converting Between Numbers and Strings 43
Strings and Characters 44
String Methods 45
ST 4 Character Values 46
ST 5 Escape Sequences 47
CS 1 International Alphabets and Unicode 47
2.5 Input and Output 48
User Input 48
Numerical Input 49
Formatted Output 50
PT 4 Don’t Wait to Convert 53
HT 1 Writing Simple Programs 53
WE 2 Computing the Cost of Stamps 56
CS 2 Bugs in Silicon 58
2.6 GRAPHICS: Simple Drawings 58
Creating a Window 59
Lines and Polygons 60
Filled Shapes and Color 62
Ovals, Circles, and Text 64
HT 2 GRAPHICS: Drawing Graphical Shapes 65
TOOLBOX 1 Symbolic Processing with SymPy 68
3 Decisions 73
3.1 The if Statement 74
CE 1 Tabs 77
PT 1 Avoid Duplication in Branches 78
ST 1 Conditional Expressions 78
3.2 Relational Operators 79
CE 2 Exact Comparison of Floating-Point Numbers 82
ST 2 Lexicographic Ordering of Strings 82
HT 1 Implementing an if Statement 83
WE 1 Extracting the Middle 85
3.3 Nested Branches 87
PT 2 Hand-Tracing 89
CS 1 Dysfunctional Computerized Systems 90
3.4 Multiple Alternatives 91
TOOLBOX 1 Sending E-mail 93
3.5 PROBLEM SOLVING: Flowcharts 96
3.6 PROBLEM SOLVING: Test Cases 99
PT 3 Make a Schedule and Make Time for Unexpected Problems 100
3.7 Boolean Variables and Operators 101
CE 3 Confusing and and or Conditions 104
PT 4 Readability 104
ST 3 Chaining Relational Operators 105
ST 4 Short-Circuit Evaluation of Boolean Operators 105
ST 5 De Morgan’s Law 106
3.8 Analyzing Strings 106
3.9 APPLICATION: Input Validation 110
ST 6 Terminating a Program 112
ST 7 Interactive Graphical Programs 112
CS 2 Artificial Intelligence 113
WE 2 GRAPHICS: Intersecting Circles 113
TOOLBOX 2 Plotting Simple Graphs 117
4 Loops 125
4.1 The while Loop 126
CE 1 Don’t Think “Are We There Yet?” 130
CE 2 Infinite Loops 130
CE 3 Off-by-One Errors 131
ST 1 Special Form of the print Function 132
CS 1 The First Bug 132
4.2 PROBLEM SOLVING: Hand-Tracing 133
4.3 APPLICATION: Processing Sentinel Values 135
ST 2 Processing Sentinel Values with a Boolean Variable 138
ST 3 Redirection of Input and Output 138
4.4 PROBLEM SOLVING: Storyboards 139
4.5 Common Loop Algorithms 141
Sum and Average Value 141
Counting Matches 142
Prompting Until a Match is Found 142
Maximum and Minimum 142
Comparing Adjacent Values 143
4.6 The for Loop 145
PT 1 Count Iterations 148
HT 1 Writing a Loop 149
4.7 Nested Loops 152
WE 1 Average Exam Grades 155
WE 2 A Grade Distribution Histogram 157
4.8 Processing Strings 159
Counting Matches 159
Finding All Matches 160
Finding the First or Last Match 160
Validating a String 161
Building a New String 162
4.9 APPLICATION: Random Numbers and Simulations 164
Generating Random Numbers 164
Simulating Die Tosses 165
The Monte Carlo Method 165
WE 3 GRAPHICS: Bull’s Eye 167
4.10 GRAPHICS: Digital Image Processing 169
Filtering Images 170
Reconfiguring Images 172
4.11 PROBLEM SOLVING: Solve a Simpler Problem First 174
CS 2 Digital Piracy 180
5 Functions 183
5.1 Functions as Black Boxes 184
5.2 Implementing and Testing Functions 185
Implementing a Function 186
Testing a Function 186
Programs that Contain Functions 187
PT 1 Function Comments 189
PT 2 Naming Functions 190
5.3 Parameter Passing 190
PT 3 Do Not Modify Parameter Variables 191
CE 1 Trying to Modify Arguments 192
5.4 Return Values 192
ST 1 Using Single-Line Compound Statements 193
HT 1 Implementing a Function 194
WE 1 Generating Random Passwords 196
5.5 Functions Without Return Values 201
CS 1 Personal Computing 202
5.6 PROBLEM SOLVING: Reusable Functions 203
5.7 PROBLEM SOLVING: Stepwise Refinement 205
PT 4 Keep Functions Short 209
PT 5 Tracing Functions 210
PT 6 Stubs 211
WE 2 Calculating a Course Grade 211
WE 3 Using a Debugger 214
5.8 Variable Scope 219
PT 7 Avoid Global Variables 221
WE 4 GRAPHICS: Rolling Dice 221
5.9 GRAPHICS: Building an Image Processing Toolkit 224
Getting Started 224
Comparing Images 225
Adjusting Image Brightness 226
Rotating an Image 227
Using the Toolkit 228
WE 5 Plotting Growth or Decay 230
5.10 Recursive Functions (Optional) 232
HT 2 Thinking Recursively 234
TOOLBOX 1 Turtle Graphics 236
LISTS 245
6.1 Basic Properties of Lists 246
Creating Lists 246
Accessing List Elements 247
Traversing Lists 248
List References 249
CE 1 Out-of-Range Errors 250
PT 1 Use Lists for Sequences of Related Items 250
ST 1 Negative Subscripts 250
ST 2 Common Container Functions 251
CS 1 Computer Viruses 251
6.2 List Operations 252
Appending Elements 252
Inserting an Element 253
Finding an Element 254
Removing an Element 254
Concatenation and Replication 255
Equality Testing 256
Sum, Maximum, Minimum, and Sorting 256
Copying Lists 256
ST 3 Slices 258
6.3 Common List Algorithms 259
Filling 259
Combining List Elements 259
Element Separators 260
Maximum and Minimum 260
Linear Search 261
Collecting and Counting Matches 261
Removing Matches 262
Swapping Elements 263
Reading Input 264
WE 1 Plotting Trigonometric Functions 265
6.4 Using Lists with Functions 268
ST 4 Call by Value and Call by Reference 271
ST 5 Tuples 271
ST 6 Functions with a Variable Number of Arguments 272
ST 7 Tuple Assignment 272
ST 8 Returning Multiple Values with Tuples 273
TOOLBOX 1 Editing Sound Files 273
6.5 PROBLEM SOLVING: Adapting Algorithms 275
HT 1 Working with Lists 276
WE 2 Rolling the Dice 278
6.6 PROBLEM SOLVING: Discovering Algorithms by Manipulating Physical Objects 282
6.7 Tables 285
Creating Tables 286
Accessing Elements 287
Locating Neighboring Elements 287
Computing Row and Column Totals 288
Using Tables with Functions 289
WE 3 A World Population Table 290
ST 9 Tables with Variable Row Lengths 292
WE 4 GRAPHICS: Drawing Regular Polygons 293
7 Files and Exceptions 299
7.1 Reading and Writing Text Files 300
Opening a File 300
Reading from a File 301
Writing from a File 302
A File Processing Example 302
CE 1 Backslashes in File Names 303
7.2 Text Input and Output 304
Iterating over the Lines of a File 304
Reading Words 306
Reading Characters 308
Reading Records 309
ST 1 Reading the Entire File 312
ST 2 Regular Expressions 312
ST 3 Character Encodings 313
TOOLBOX 1 Working with CSV Files 314
7.3 Command Line Arguments 316
HT 1 Processing Text Files 319
WE 1 Analyzing Baby Names 322
TOOLBOX 2 Working with Files and Directories 325
CS 1 Encryption Algorithms 327
7.4 Binary Files and Random Access (Optional) 328
Reading and Writing Binary Files 328
Random Access 329
Image Files 330
Processing BMP Files 331
WE 2 GRAPHICS: Displaying a Scene File 334
7.5 Exception Handling 337
Raising Exceptions 338
Handling Exceptions 339
The finally Clause 341
PT 1 Raise Early, Handle Late 342
PT 2 Do Not Use except and finally in the Same try Statement 342
ST 4 The with Statement 343
TOOLBOX 3 Reading Web Pages 343
7.6 APPLICATION: Handling Input Errors 344
TOOLBOX 4 Statistical Analysis 348
WE 3 Creating a Bubble Chart 352
CS 2 The Ariane Rocket Incident 355
8 Sets and Dictionaries 357
8.1 Sets 358
Creating and Using Sets 358
Adding and Removing Elements 359
Subsets 360
Set Union, Intersection, and Difference 361
WE 1 Counting Unique Words 364
PT 1 Use Python Sets, Not Lists, for Efficient Set
Operations 366
ST 1 Hashing 367
CS 1 Standardization 368
8.2 Dictionaries 368
Creating Dictionaries 369
Accessing Dictionary Values 370
Adding and Modifying Items 370
Removing Items 371
Traversing a Dictionary 372
ST 2 Iterating over Dictionary Items 374
ST 3 Storing Data Records 375
WE 2 Translating Text Messages 375
8.3 Complex Structures 378
A Dictionary of Sets 378
A Dictionary of Lists 381
ST 4 User Modules 383
WE 3 GRAPHICS: Pie Charts 384
TOOLBOX 1 Harvesting JSON Data from the Web 388
9 Objects and Classes 393
9.1 Object-Oriented Programming 394
9.2 Implementing a Simple Class 396
9.3 Specifying the Public Interface of a Class 399
9.4 Designing the Data Representation 401
PT 1 Make All Instance Variables Private, Most Methods Public 402
9.5 Constructors 402
CE 1 Trying to Call a Constructor 404
ST 1 Default and Named Arguments 404
9.6 Implementing Methods 405
PT 2 Define Instance Variables Only in the Constructor 407
ST 2 Class Variables 408
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THE CENTURION.—Matt. viii. 8.
THE WIDOW OF NAIN.
Once Jesus went to the city of Nain. His disciples went with him.
Many people followed him. As he reached the city gate he met a
funeral procession. It was a long procession, for the young man who
was dead had been his mother’s only son, and she was a widow.
The people were very sorry for her. Jesus, when he saw her, felt very
sorry for her, too. He spoke to her. He said, “Weep not.” Then he
went towards the frame on which the dead body was laid, and
touched it; and the men who were carrying it stood still, and Jesus
spoke to the dead. He said, “Young man, I say unto thee, arise.”
Immediately the dead man sat up and spoke to Jesus; and Jesus
called his mother to him. This wonderful thing made the people
afraid; they said, “A great prophet has come among us.” And they
praised God for sending him. This story was told all over the country,
and for many miles around. When the people came together they
said, “Have you heard how that poor widow who lives in Nain had
her son given back to her after he was dead?”
JESUS RAISETH THE WIDOW’S SON.—Luke vii. 14-15.
THE FRIEND OF SINNERS.
Jesus was invited to dine with a man named Simon. While at
table, a poor woman came in and poured sweet-smelling ointment
over the feet of Jesus, weeping so that she washed his feet with her
tears. Simon did not like this, for the woman was very wicked. He
thought if Jesus were a prophet he would know what sort of a
woman this was, and would not allow her to touch him. Jesus saw
these thoughts in his heart, and told him he had something to say to
him. Then he told him this story: “There was once a man who was
owed by two men; one owed him five hundred pence, and the other
fifty. Both were poor, having nothing with which to pay their debt.
The good man knowing this, forgave them both. Tell me, which of
them will love him most?”
“Why,” said Simon, “I suppose the one who owed the most.”
“Yes,” said Jesus, “that is true. Simon, do you see this poor
woman? You gave me no water to wash my feet, but she has
washed them with her tears, and wiped them with her hair. You gave
me no kiss, but she continues to kiss my feet. You did not even
anoint my head, but she has anointed my feet. Now I tell you this:
her sins which are many, are forgiven, for she loves me very much.
If people feel that they have but little to be forgiven, they have but
little love.” Then he spoke to the woman; he said: “Your sins are
forgiven.” Those who were sitting with him at table began to say
among themselves, “Why, who is this man who can forgive sins?”
Jesus spoke again to the woman; he said: “Thy faith hath saved
thee; go in peace.”
MARY MAGDALEN ANOINTING THE FEET OF JESUS.—Luke vii. 38.
RETURN OF THE SEVENTY.
Seventy people were sent out in many directions to tell the people
of the Lord Jesus. They had blessed meetings. They came back filled
with joy. They told Jesus that they had found even devils who had to
obey their words when they spoke in his name. Jesus told them that
he had long known that Satan would be subject to him. Also he
promised them that nothing should hurt them in their work, neither
that serpent Satan, nor any of his helpers. But he reminded them,
that though they had such great power given them, there was
something better than that for them to rejoice over forever: that
their names were written in heaven. Then Jesus, with great joy in
his heart, thanked God that he had hidden many things from the
worldly-wise and the selfishly prudent, and had made them known
to the humble-hearted who were willing to be like little children and
learn of him. He reminded his disciples that no man knew about the
mysteries of God, but that all things were delivered to him, and that
no one could understand the Father unless he made him plain to
their hearts. And he said to those disciples aside, “Blessed are the
eyes which see the things that you see; many prophets and kings
desired to see them, but were not permitted.”
AND WHEN YE COME INTO AN HOUSE, SALUTE IT.—Matt. x. 12.
THE GOOD SAMARITAN.
A lawyer once asked Jesus who was his neighbor, and Jesus told
him this story:—“Once a man went from Jerusalem to Jericho, and
on the road he met a party of thieves. They stripped his clothes from
him; they wounded him, and at last went away, leaving him lying
half dead. A little while after a certain minister passed that way; he
saw the man, but he crossed the street and went on. Then there
came a Levite; he stopped and looked at the poor man, and then he
too crossed the street and went on his way. Then there came a
Samaritan; he stopped and looked at the poor man, and his heart
was filled with pity. The man was nothing to him, not even one of his
own nation; but he bound up his wounds, pouring oil and wine on
them to soothe the pain; then he lifted the man to his own horse
and took him to a place where he could be cared for. In the morning
before he went on his journey, he took from his pocket some money,
and gave it to the host, and asked him to have the sick man taken
care of. If he had to spend money, when he came that way again he
would pay the bill.”
“Now,” said Jesus, “which of these three people do you think
treated the poor man like a neighbor?”
“Why,” said the lawyer, “the one who took care of him.”
“Then,” said Jesus, “see that you follow his example.”
THE GOOD SAMARITAN.—Luke x. 33.
IMPORTUNITY IN PRAYER.
At one time when Jesus was with his disciples they asked him to
teach them to pray. Having talked with them about the Lord’s Prayer,
he illustrated prayer by the following:
Said he: “Suppose you had a friend to whom you should go one
night at midnight, and ask him to lend you three loaves of bread, for
a friend had arrived unexpectedly, and you had nothing for him.
Suppose he should answer, ‘Don’t trouble me; I’ve shut my house for
the night, and my children and I are in bed; I can’t get up and
attend to you.’ Now I tell you, though he wouldn’t attend to you on
account of friendship, yet if you persist in urging your need he will
get up and give you what you want. Now I say to you: ask and it
shall be given you; seek and ye shall find; knock and it shall be
opened unto you. Every one that asks shall receive; he who seeks
shall find; to him who knocks it shall be opened. Suppose your son
asks for a piece of bread, would you give him a stone? Suppose he
asks for a fish, would you give him a serpent? If he ask for an egg,
would you give him a scorpion? Now, if you with evil hearts and
ignorant minds, yet know enough to take care of your children and
give them proper things, don’t you suppose that your Heavenly
Father knows what you need, and will give the Holy Spirit to those
who ask him?”
SECRET PRAYER.—Matt. vi. 6.
WARNING AGAINST COVETOUSNESS.
Jesus had been talking about the loving care of the Heavenly
Father, and one of the listeners interrupted him with a request that
he would talk to his brother and get him to divide equally between
them the property that had been left. Jesus asked him who he
thought made him a judge, or a divider over them; and then, by the
story he told them, he showed the covetous thought that was in the
man’s heart. He reminded them that the important thing in a man’s
life was not to have a great deal of property. Said he: “There was a
certain man who grew rich; his harvests were so great that he
wondered what he should do with all his grain. At last he decided to
pull down his barns and build larger ones, and then say to his soul,
‘Soul, you have plenty of food, enough to last you many years; take
your ease, eat, drink and be merry.’ But just then God spoke to him;
He said, ‘Foolish man, this night your soul shall be called to leave the
body; then who will have all these things which you have
provided?’—Now,” said Jesus, “the man who plans for himself, laying
up treasures for himself, and has none of the riches that God could
give him, is like this poor, foolish man in the story.” Then He turned
to His disciples and told them that living meant more than simply
keeping the body alive and clothed.
CONSIDER THE LILIES HOW THEY GROW.—Luke xii. 27.
WARNING AGAINST FORMALISM.
Jesus was traveling through the cities and villages on his way to
Jerusalem, teaching as he went. One day a man asked him if many
would be saved. He said all must strive to enter in at the straight
gate, for many would try some other way and would not get in. He
said, “It was like a feast spread for guests; and when once the
master of the house had closed the door, no more could get in.
Those who stood outside saying, ‘Lord, Lord, open the door for us,’
would only be answered with ‘I don’t know you.’ They might answer,
‘We have eaten and drank with you, and you have taught in our
streets,’ for some of these people who would not follow Jesus had
sat at table with him and heard his teachings. But he said the
answer to any such would be, ‘I don’t know you; go away, you are
wicked people.’—Then,” said Jesus, “there shall be weeping and
gnashing of teeth;” Abraham, and Isaac, and Jacob would be inside,
but those who would not come to him by the right way would be
thrust out. People from every quarter shall come together and sit
down in God’s kingdom. The Gentiles, who were the last to hear the
good news, shall be among the first in heaven, and some of the
Jews (God’s dear people who would not love Him) will not get in.
JESUS EATETH WITH PUBLICANS AND SINNERS.—Mark ii. 16.
THE GOSPEL FEAST.
One Sabbath-day Jesus was taking dinner at the house of a
Pharisee. He talked with the people at the table about humility of
manner at the great feasts which were given in those days. Then
one of the company said to him, “Blessed is he that shall eat bread
in the kingdom of God.” I do not think he meant heaven, but rather
the kingdom that he hoped the Messiah would set up on the earth.
Jesus answered him in the form of a story about a man who made a
great supper, sending out many invitations. When everything was
ready he sent for his guests to come, and every one of them sent an
excuse. One said he had bought a piece of ground and must go and
see it, and begged to be excused; another said he had bought five
yoke of oxen, and was going to prove them; another said he had
just been married and couldn’t come. When the servant came back
and told his master he was angry. He told his servants to go out
quickly through the streets and bring all the lame people, and the
blind people, and the poor people of every sort. So the servant did
as he was told; but he said to his master, “There is room yet.” So the
master told him to go out in the highways and hedges, and coax
people to come to the supper, and fill the house, for none of those
who were first invited should be allowed to taste of the supper.
JESUS AND HIS DISCIPLES ON THE ROAD TO CÆSAREA.—Mark viii. 27.
THE PRODIGAL SON.
Jesus once, in teaching the people, told this story: “A man had
two sons; the younger of them asked his father to give him the part
of the property that would finally belong to him. So the father
divided his wealth between them. A few days after that the younger
son went a long journey, taking all his money with him; but he
wasted it in wild and foolish living. When it was all gone there came
a great famine to that country, and the foolish young man had
nothing to live on. He went looking for work, and a man hired him to
take care of swine. He was so hungry that he was willing to eat the
husks that the swine had for food; and no one gave anything to him.
Then he began to think of his home, and to remember how his
father’s servants had plenty to eat, and here he was starving! Then
he said, ‘I will arise and go to my father, and I will say to him,
Father, I have sinned against heaven and before you. I am not
worthy to be called your son; let me be one of your hired servants.’
So he went on his journey home. When he was yet a great way from
the house, his father saw him and ran out to meet him, and put his
arms around him and kissed him. Then the son said, ‘Father, I have
sinned against heaven and against you; I am not worthy to be called
your son.’ But the father said, ‘bring the best clothes in the house for
him to wear, and put a ring on his hand, and shoes on his feet, and
have the fatted calf killed, and make a feast, and let us eat and drink
and be merry; for my son was the same to me as dead, and now he
is alive again; he was lost, but now he is found.’ And they were
merry.”
RETURN OF THE PRODIGAL SON.—Luke xv. 20.
THE RICH MAN AND LAZARUS.
In order to explain to his disciples that there were two worlds for
souls, Jesus once told them this story:—“There was a rich man who
wore elegant clothing and lived richly every day. There was a poor,
sick beggar, named Lazarus, lying at his gate. He wanted the crumbs
which were left from the rich man’s table. His body was full of sores,
and the dogs used to come and lick them. One day this poor man
died, but God sent his angels and carried him to heaven. Then the
rich man died, and was buried. His soul went to hell. One day, while
he was in that place of pain and torment, he looked up, and away
off he saw heaven, and Lazarus the beggar was there, with his head
on Abraham’s bosom. He called to him: ‘Father Abraham, have
mercy on me, and send Lazarus to dip the tip of his finger in water
and cool my tongue, for I am tormented in this flame.’ But Abraham
said: ‘Son, remember that while you were living you had plenty of
good things, while Lazarus suffered at your gate. Now he is happy,
and you are suffering. And, besides, there is a great gulf between
you and us, so that if we wanted to come to you we could not;
neither can you come here from that place.’ Then the rich man said,
‘I pray you send him to my father’s house to tell my five brothers
about this dreadful place, so they need not come here.’ But Abraham
said, ‘Why, they have the story of that place. Moses wrote about it,
and the Prophets wrote about it; let them read it.’ But the rich man
said, ‘O, Father Abraham, if one went back to them from the dead,
they would repent.’ ‘No,’ said Abraham, ‘if they will not believe God’s
own word, as Moses and the Prophets wrote it in the Bible, neither
would they believe if one went to them from the dead.’”
LAZARUS AT THE RICH MAN’S DOOR.—Luke xvi. 19.
THE TEN LEPERS.
One day Jesus, on his journey to Jerusalem, passed through a
village in Samaria. He saw ten men who had the leprosy; they kept
away from all other people, as the law obliged them to. But when
they saw Jesus, they called out with loud voices, “Jesus, Master,
have mercy on us!” Jesus said to them, “Go show yourselves to the
priest.” This was what people who were cured of leprosy were
obliged to do before they could go among the people. The priest had
to give them a certificate to say that they were cured. As these ten
men turned to go to the priest, as Jesus had told them, suddenly
they found that they were well. One of them, as soon as he found it
out, turned back and followed after Jesus, and when he reached him
he bowed down at his feet, thanking him and praising God. He was
from a Samaritan village; not one of the Lord’s chosen people, but a
Gentile. Jesus said to him, “Didn’t I cure ten men? Where are the
nine? Not one of them came back to thank me, except this
Samaritan.” Then he said to the kneeling man, “Arise, and go on
your way; your faith hath made you whole.”
JESUS CURING THE TEN LEPERS.—Luke xvii. 14.
WHOM THE LORD RECEIVES.
When Jesus was on earth he met some people who thought that
they were perfect, and they despised other people. One day he told
them this story: “There were two men who went to the temple one
day to pray. One of them was a Pharisee, the other a publican. The
Pharisee said, ‘God, I thank thee that I am not like other men,
extortioners, unjust, adulterers, or even as this man beside me. I
fast twice in the week, and I give a tenth of all that I have.’ Then the
publican prayed: he did not even go close to the holy place: he kept
his eyes on the ground, and he struck his breast, which was a sign
of deep humility, as he said, ‘God be merciful to me, a sinner’—I tell
you,” said Jesus, “that man went back to his home justified, rather
than the other, for every one who thinks too well of himself must be
humbled; but those who are humble God will exalt.”
The rest of the story is about some very little children being
brought to Jesus. His disciples tried to have them sent away, for they
did not understand Jesus; but he called the little ones to him and
said: “Suffer little children to come unto me, and forbid them not, for
of such is the kingdom of heaven. Truly I say to you, that any one
who will not receive the kingdom of heaven with the faith of a little
child shall never enter there.”
THE PHARISEE AND THE PUBLICAN.—Luke xviii. 10.
ZACCHEUS THE PUBLICAN.
There was a man named Zaccheus, a rich man, a tax-gatherer,
who wanted very much to see Jesus. One day, when Jesus was
passing through the city of Jericho, Zaccheus, who was a small man
and could not see over the heads of the crowd who were following
Jesus, ran ahead of them and climbed into a sycamore tree. When
Jesus reached the tree he looked up and said, “Zaccheus, make
haste and come down; I want to go to your house to-day.” Then
Zaccheus hurried down and joyfully took Jesus home with him. But
the people murmured about it; they said, “He has gone to visit a
wicked man.” Then Zaccheus talked with Jesus; he said to him,
“Lord, I mean to give the half of all my goods to the poor; and if I
have taken anything from any man wrongfully, I will give him back
four times as much.” Then Jesus said to him, “This day is salvation
come to your house. You are a Jew, a son of Abraham; you shall
have the promised gift.”
JUDAISM OVERTHROWN.
Jesus, one day, talking with his disciples, said to them: “Take care
that you are not deceived. There will be many coming in my name,
saying, ‘I am Christ, and the end is near;’ but don’t follow after
them. When you hear of wars and disturbances, don’t be frightened;
these things must first come, but the end is not at once. Nation shall
rise against nation, and kingdom against kingdom, and there shall
be great earthquakes, and famines, and pestilences, and fearful
sights; and great signs shall there be from heaven: and before these
come, people will persecute you, and put you in prisons, and you
shall be brought before kings and rulers, for my name’s sake. And
you will have a chance to testify for me; but you need not plan what
you shall say, for I will give you words that your enemies can neither
answer nor resist. You will be betrayed by parents, brothers,
relatives and friends, and some of you will be put to death; and you
will be hated by men for my sake; but not a hair of your head shall
perish. Be patient to the end, and your souls shall be saved. When
you see Jerusalem surrounded with armies, then know that
desolation is near. Then let them which are in Judea flee to the
mountains, and let them which are in the midst of it depart out, and
let not them which are in the countries enter thereinto.”
JESUS FORETELLS THE DESTRUCTION OF THE TEMPLE.—Matt. xxiv. 2.
THE LORD’S SUPPER.
It was the evening before Jesus was to be crucified that these
things happened which are in our lesson to-day. Jesus sent Peter
and John to make ready the supper, that they might eat it together.
He said to them: “When you get to the city of Jerusalem, a man will
meet you, carrying a pitcher of water; follow him and stop at the
same house. Tell the man of the house that the Master told you to
ask him where the guest-chamber was in which he could eat the
Passover with his disciples. He will show you a large upper room,
furnished. In that room make all things ready.” It all happened just
as he said, and they prepared the supper. When Jesus and the
twelve disciples sat down he said to them, “I have longed to eat this
Passover with you before I suffer, for I will not eat of it any more
until it be fulfilled in the kingdom of God.” Then he took up the cup
and gave thanks, and said, “Take this and divide it among
yourselves, for I say unto you, I shall not drink of the fruit of the
vine until the kingdom of God shall come.” And he took bread and
gave thanks, and gave the bread to them, saying, “This is my body
which is given for you; do this in remembrance of me.” After supper
he took the cup and passed it to them, saying, “This cup is the new
testament in my blood, which is shed for you.”
THE LAST SUPPER.—Matt. xxvi. 26.
THE CROSS.
At the place which is called Calvary, our Lord was crucified, and on
the cross with him hung two thieves, one on each side. The soldiers
divided his clothes among them, casting lots which should have
them. He prayed for them all; he said, “Father, forgive them, for they
know not what they do.” The people and the rulers stood about him,
looking at him and mocking. They said, “He saved others, let him
save himself if he is Christ, the chosen one of God.” And the soldiers
also mocked him, offering him vinegar to drink, and saying to him,
“If you are the king of the Jews, save yourself.” Then they wrote on
a tablet in Greek, and in Latin, and in Hebrew, “This is the King of
the Jews,” and hung it over the cross. One of the thieves joined in
the mocking, saying, “If you are Christ, save yourself and us;” but
the other thief reproved him, asking him if he did not fear God, since
they were suffering the same punishment. “They,” he said,
“deserved their punishment, but the other had done nothing wrong.”
Then he spoke directly to Jesus: he said, “Lord, remember me when
thou comest into thy kingdom.” And instantly Jesus answered him in
these words, “Verily I say unto you, To-day shalt thou dwell with me
in Paradise.” These things happened about twelve o’clock. From that
time until three o’clock the earth was dark; the sun hid away. When
Jesus cried out with a loud voice, he said, “It is finished;” and then,
“Father, into thy hands I commit my spirit;” and having said this, he
died. Just then the veil which had always hidden the inner temple
split in two from top to bottom.
THE CRUCIFIXION.—John xix. 25.
THE WALK TO EMMAUS.
The third day after Jesus was buried, two of his friends walked to
a village named Emmaus, which was about seven miles from
Jerusalem. As they walked along they talked together about the sad
things that had lately happened. At that moment Jesus himself came
along and joined them, but they did not know him. He asked them
what it was they were talking about, and why they were so sad. One
of them, named Cleopas, asked him if he was a stranger in
Jerusalem that he had not heard the strange, sad news. He asked
them, “What news?” And Cleopas answered: “Why, about Jesus of
Nazareth; he was a mighty prophet; his words and his deeds were
wonderful; but our rulers condemned him to death and crucified
him. We hoped that he was the one who was to redeem the people
of Israel; but this is the third day since these things were done.
Some women who were at the grave this morning, told us a strange
story; they say his body is not there, and that they saw angels who
said that he was alive; and some of our friends went to the grave
and found that it was as the women said, but they did not see him.”
Then Jesus said to them: “O what foolish people. How slow you are
to believe all that the prophets wrote about this! Did they not tell
that Christ must suffer these things and then enter into his glory?”
Then he began with the books that Moses wrote, and explained
what he and the other writers had said about Christ. When they
drew near to Emmaus the stranger acted as though he was going
further, but they begged him to stop with them, as the day was
nearly gone. So he stopped with them, and as they sat down to the
table together, suddenly something opened their eyes to know that it
was Jesus who sat with them. He took some bread and blessed it,
and gave them some. Then he vanished out of their sight.
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  • 5. 1.1 Computer Programs 2 1.2 The Anatomy of a Computer 3 CS 1 Computers Are Everywhere 5 1.3 The Python Programming Language 5 1.4 Becoming Familiar with Your Programming Environment 6 PT 1 Interactive Mode 8 PT 2 Backup Copies 9 ST 1 The Python Interpreter 10 1.5 Analyzing Your First Program 11 1.6 Errors 13 CE 1 Misspelling Words 14 1.7 PROBLEM SOLVING: Algorithm Design 15 CS 2 Data Is Everywhere 17 HT 1 Describing an Algorithm with Pseudocode 18 WE 1 Writing an Algorithm for Tiling a Floor 20 2 Programming With Numbers and Strings 23 2.1 Variables 24 Defining Variables 24 Number Types 26 Variable Names 27 Constants 28 Comments 29 CE 1 Using Undefined Variables 30 PT 1 Choose Descriptive Variable Names 30 PT 2 Do Not Use Magic Numbers 30
  • 6. 2.2 Arithmetic 31 Basic Arithmetic Operations 31 Powers 32 Floor Division and Remainder 32 Calling Functions 33 Mathematical Functions 35 CE 2 Roundoff Errors 36 CE 3 Unbalanced Parentheses 37 PT 3 Use Spaces in Expressions 37 ST 1 Other Ways to Import Modules 38 ST 2 Combining Assignment and Arithmetic 38 ST 3 Line Joining 38 2.3 PROBLEM SOLVING: First Do It By Hand 39 WE 1 Computing Travel Time 40 2.4 Strings 41 The String Type 41 Concatenation and Repetition 42 Converting Between Numbers and Strings 43 Strings and Characters 44 String Methods 45 ST 4 Character Values 46 ST 5 Escape Sequences 47 CS 1 International Alphabets and Unicode 47 2.5 Input and Output 48 User Input 48
  • 7. Numerical Input 49 Formatted Output 50 PT 4 Don’t Wait to Convert 53 HT 1 Writing Simple Programs 53 WE 2 Computing the Cost of Stamps 56 CS 2 Bugs in Silicon 58 2.6 GRAPHICS: Simple Drawings 58 Creating a Window 59 Lines and Polygons 60 Filled Shapes and Color 62 Ovals, Circles, and Text 64 HT 2 GRAPHICS: Drawing Graphical Shapes 65 TOOLBOX 1 Symbolic Processing with SymPy 68 3 Decisions 73 3.1 The if Statement 74 CE 1 Tabs 77 PT 1 Avoid Duplication in Branches 78 ST 1 Conditional Expressions 78 3.2 Relational Operators 79 CE 2 Exact Comparison of Floating-Point Numbers 82 ST 2 Lexicographic Ordering of Strings 82 HT 1 Implementing an if Statement 83 WE 1 Extracting the Middle 85 3.3 Nested Branches 87 PT 2 Hand-Tracing 89
  • 8. CS 1 Dysfunctional Computerized Systems 90 3.4 Multiple Alternatives 91 TOOLBOX 1 Sending E-mail 93 3.5 PROBLEM SOLVING: Flowcharts 96 3.6 PROBLEM SOLVING: Test Cases 99 PT 3 Make a Schedule and Make Time for Unexpected Problems 100 3.7 Boolean Variables and Operators 101 CE 3 Confusing and and or Conditions 104 PT 4 Readability 104 ST 3 Chaining Relational Operators 105 ST 4 Short-Circuit Evaluation of Boolean Operators 105 ST 5 De Morgan’s Law 106 3.8 Analyzing Strings 106 3.9 APPLICATION: Input Validation 110 ST 6 Terminating a Program 112 ST 7 Interactive Graphical Programs 112 CS 2 Artificial Intelligence 113 WE 2 GRAPHICS: Intersecting Circles 113 TOOLBOX 2 Plotting Simple Graphs 117 4 Loops 125 4.1 The while Loop 126 CE 1 Don’t Think “Are We There Yet?” 130 CE 2 Infinite Loops 130 CE 3 Off-by-One Errors 131 ST 1 Special Form of the print Function 132
  • 9. CS 1 The First Bug 132 4.2 PROBLEM SOLVING: Hand-Tracing 133 4.3 APPLICATION: Processing Sentinel Values 135 ST 2 Processing Sentinel Values with a Boolean Variable 138 ST 3 Redirection of Input and Output 138 4.4 PROBLEM SOLVING: Storyboards 139 4.5 Common Loop Algorithms 141 Sum and Average Value 141 Counting Matches 142 Prompting Until a Match is Found 142 Maximum and Minimum 142 Comparing Adjacent Values 143 4.6 The for Loop 145 PT 1 Count Iterations 148 HT 1 Writing a Loop 149 4.7 Nested Loops 152 WE 1 Average Exam Grades 155 WE 2 A Grade Distribution Histogram 157 4.8 Processing Strings 159 Counting Matches 159 Finding All Matches 160 Finding the First or Last Match 160 Validating a String 161 Building a New String 162 4.9 APPLICATION: Random Numbers and Simulations 164
  • 10. Generating Random Numbers 164 Simulating Die Tosses 165 The Monte Carlo Method 165 WE 3 GRAPHICS: Bull’s Eye 167 4.10 GRAPHICS: Digital Image Processing 169 Filtering Images 170 Reconfiguring Images 172 4.11 PROBLEM SOLVING: Solve a Simpler Problem First 174 CS 2 Digital Piracy 180 5 Functions 183 5.1 Functions as Black Boxes 184 5.2 Implementing and Testing Functions 185 Implementing a Function 186 Testing a Function 186 Programs that Contain Functions 187 PT 1 Function Comments 189 PT 2 Naming Functions 190 5.3 Parameter Passing 190 PT 3 Do Not Modify Parameter Variables 191 CE 1 Trying to Modify Arguments 192 5.4 Return Values 192 ST 1 Using Single-Line Compound Statements 193 HT 1 Implementing a Function 194 WE 1 Generating Random Passwords 196 5.5 Functions Without Return Values 201
  • 11. CS 1 Personal Computing 202 5.6 PROBLEM SOLVING: Reusable Functions 203 5.7 PROBLEM SOLVING: Stepwise Refinement 205 PT 4 Keep Functions Short 209 PT 5 Tracing Functions 210 PT 6 Stubs 211 WE 2 Calculating a Course Grade 211 WE 3 Using a Debugger 214 5.8 Variable Scope 219 PT 7 Avoid Global Variables 221 WE 4 GRAPHICS: Rolling Dice 221 5.9 GRAPHICS: Building an Image Processing Toolkit 224 Getting Started 224 Comparing Images 225 Adjusting Image Brightness 226 Rotating an Image 227 Using the Toolkit 228 WE 5 Plotting Growth or Decay 230 5.10 Recursive Functions (Optional) 232 HT 2 Thinking Recursively 234 TOOLBOX 1 Turtle Graphics 236 LISTS 245 6.1 Basic Properties of Lists 246 Creating Lists 246 Accessing List Elements 247
  • 12. Traversing Lists 248 List References 249 CE 1 Out-of-Range Errors 250 PT 1 Use Lists for Sequences of Related Items 250 ST 1 Negative Subscripts 250 ST 2 Common Container Functions 251 CS 1 Computer Viruses 251 6.2 List Operations 252 Appending Elements 252 Inserting an Element 253 Finding an Element 254 Removing an Element 254 Concatenation and Replication 255 Equality Testing 256 Sum, Maximum, Minimum, and Sorting 256 Copying Lists 256 ST 3 Slices 258 6.3 Common List Algorithms 259 Filling 259 Combining List Elements 259 Element Separators 260 Maximum and Minimum 260 Linear Search 261 Collecting and Counting Matches 261 Removing Matches 262
  • 13. Swapping Elements 263 Reading Input 264 WE 1 Plotting Trigonometric Functions 265 6.4 Using Lists with Functions 268 ST 4 Call by Value and Call by Reference 271 ST 5 Tuples 271 ST 6 Functions with a Variable Number of Arguments 272 ST 7 Tuple Assignment 272 ST 8 Returning Multiple Values with Tuples 273 TOOLBOX 1 Editing Sound Files 273 6.5 PROBLEM SOLVING: Adapting Algorithms 275 HT 1 Working with Lists 276 WE 2 Rolling the Dice 278 6.6 PROBLEM SOLVING: Discovering Algorithms by Manipulating Physical Objects 282 6.7 Tables 285 Creating Tables 286 Accessing Elements 287 Locating Neighboring Elements 287 Computing Row and Column Totals 288 Using Tables with Functions 289 WE 3 A World Population Table 290 ST 9 Tables with Variable Row Lengths 292 WE 4 GRAPHICS: Drawing Regular Polygons 293 7 Files and Exceptions 299 7.1 Reading and Writing Text Files 300
  • 14. Opening a File 300 Reading from a File 301 Writing from a File 302 A File Processing Example 302 CE 1 Backslashes in File Names 303 7.2 Text Input and Output 304 Iterating over the Lines of a File 304 Reading Words 306 Reading Characters 308 Reading Records 309 ST 1 Reading the Entire File 312 ST 2 Regular Expressions 312 ST 3 Character Encodings 313 TOOLBOX 1 Working with CSV Files 314 7.3 Command Line Arguments 316 HT 1 Processing Text Files 319 WE 1 Analyzing Baby Names 322 TOOLBOX 2 Working with Files and Directories 325 CS 1 Encryption Algorithms 327 7.4 Binary Files and Random Access (Optional) 328 Reading and Writing Binary Files 328 Random Access 329 Image Files 330 Processing BMP Files 331 WE 2 GRAPHICS: Displaying a Scene File 334
  • 15. 7.5 Exception Handling 337 Raising Exceptions 338 Handling Exceptions 339 The finally Clause 341 PT 1 Raise Early, Handle Late 342 PT 2 Do Not Use except and finally in the Same try Statement 342 ST 4 The with Statement 343 TOOLBOX 3 Reading Web Pages 343 7.6 APPLICATION: Handling Input Errors 344 TOOLBOX 4 Statistical Analysis 348 WE 3 Creating a Bubble Chart 352 CS 2 The Ariane Rocket Incident 355 8 Sets and Dictionaries 357 8.1 Sets 358 Creating and Using Sets 358 Adding and Removing Elements 359 Subsets 360 Set Union, Intersection, and Difference 361 WE 1 Counting Unique Words 364 PT 1 Use Python Sets, Not Lists, for Efficient Set Operations 366 ST 1 Hashing 367 CS 1 Standardization 368 8.2 Dictionaries 368 Creating Dictionaries 369
  • 16. Accessing Dictionary Values 370 Adding and Modifying Items 370 Removing Items 371 Traversing a Dictionary 372 ST 2 Iterating over Dictionary Items 374 ST 3 Storing Data Records 375 WE 2 Translating Text Messages 375 8.3 Complex Structures 378 A Dictionary of Sets 378 A Dictionary of Lists 381 ST 4 User Modules 383 WE 3 GRAPHICS: Pie Charts 384 TOOLBOX 1 Harvesting JSON Data from the Web 388 9 Objects and Classes 393 9.1 Object-Oriented Programming 394 9.2 Implementing a Simple Class 396 9.3 Specifying the Public Interface of a Class 399 9.4 Designing the Data Representation 401 PT 1 Make All Instance Variables Private, Most Methods Public 402 9.5 Constructors 402 CE 1 Trying to Call a Constructor 404 ST 1 Default and Named Arguments 404 9.6 Implementing Methods 405 PT 2 Define Instance Variables Only in the Constructor 407 ST 2 Class Variables 408
  • 17. Other documents randomly have different content
  • 19. THE WIDOW OF NAIN. Once Jesus went to the city of Nain. His disciples went with him. Many people followed him. As he reached the city gate he met a funeral procession. It was a long procession, for the young man who was dead had been his mother’s only son, and she was a widow. The people were very sorry for her. Jesus, when he saw her, felt very sorry for her, too. He spoke to her. He said, “Weep not.” Then he went towards the frame on which the dead body was laid, and touched it; and the men who were carrying it stood still, and Jesus spoke to the dead. He said, “Young man, I say unto thee, arise.” Immediately the dead man sat up and spoke to Jesus; and Jesus called his mother to him. This wonderful thing made the people afraid; they said, “A great prophet has come among us.” And they praised God for sending him. This story was told all over the country, and for many miles around. When the people came together they said, “Have you heard how that poor widow who lives in Nain had her son given back to her after he was dead?”
  • 20. JESUS RAISETH THE WIDOW’S SON.—Luke vii. 14-15.
  • 21. THE FRIEND OF SINNERS. Jesus was invited to dine with a man named Simon. While at table, a poor woman came in and poured sweet-smelling ointment over the feet of Jesus, weeping so that she washed his feet with her tears. Simon did not like this, for the woman was very wicked. He thought if Jesus were a prophet he would know what sort of a woman this was, and would not allow her to touch him. Jesus saw these thoughts in his heart, and told him he had something to say to him. Then he told him this story: “There was once a man who was owed by two men; one owed him five hundred pence, and the other fifty. Both were poor, having nothing with which to pay their debt. The good man knowing this, forgave them both. Tell me, which of them will love him most?” “Why,” said Simon, “I suppose the one who owed the most.” “Yes,” said Jesus, “that is true. Simon, do you see this poor woman? You gave me no water to wash my feet, but she has washed them with her tears, and wiped them with her hair. You gave me no kiss, but she continues to kiss my feet. You did not even anoint my head, but she has anointed my feet. Now I tell you this: her sins which are many, are forgiven, for she loves me very much. If people feel that they have but little to be forgiven, they have but little love.” Then he spoke to the woman; he said: “Your sins are forgiven.” Those who were sitting with him at table began to say among themselves, “Why, who is this man who can forgive sins?” Jesus spoke again to the woman; he said: “Thy faith hath saved thee; go in peace.”
  • 22. MARY MAGDALEN ANOINTING THE FEET OF JESUS.—Luke vii. 38.
  • 23. RETURN OF THE SEVENTY. Seventy people were sent out in many directions to tell the people of the Lord Jesus. They had blessed meetings. They came back filled with joy. They told Jesus that they had found even devils who had to obey their words when they spoke in his name. Jesus told them that he had long known that Satan would be subject to him. Also he promised them that nothing should hurt them in their work, neither that serpent Satan, nor any of his helpers. But he reminded them, that though they had such great power given them, there was something better than that for them to rejoice over forever: that their names were written in heaven. Then Jesus, with great joy in his heart, thanked God that he had hidden many things from the worldly-wise and the selfishly prudent, and had made them known to the humble-hearted who were willing to be like little children and learn of him. He reminded his disciples that no man knew about the mysteries of God, but that all things were delivered to him, and that no one could understand the Father unless he made him plain to their hearts. And he said to those disciples aside, “Blessed are the eyes which see the things that you see; many prophets and kings desired to see them, but were not permitted.”
  • 24. AND WHEN YE COME INTO AN HOUSE, SALUTE IT.—Matt. x. 12.
  • 25. THE GOOD SAMARITAN. A lawyer once asked Jesus who was his neighbor, and Jesus told him this story:—“Once a man went from Jerusalem to Jericho, and on the road he met a party of thieves. They stripped his clothes from him; they wounded him, and at last went away, leaving him lying half dead. A little while after a certain minister passed that way; he saw the man, but he crossed the street and went on. Then there came a Levite; he stopped and looked at the poor man, and then he too crossed the street and went on his way. Then there came a Samaritan; he stopped and looked at the poor man, and his heart was filled with pity. The man was nothing to him, not even one of his own nation; but he bound up his wounds, pouring oil and wine on them to soothe the pain; then he lifted the man to his own horse and took him to a place where he could be cared for. In the morning before he went on his journey, he took from his pocket some money, and gave it to the host, and asked him to have the sick man taken care of. If he had to spend money, when he came that way again he would pay the bill.” “Now,” said Jesus, “which of these three people do you think treated the poor man like a neighbor?” “Why,” said the lawyer, “the one who took care of him.” “Then,” said Jesus, “see that you follow his example.”
  • 27. IMPORTUNITY IN PRAYER. At one time when Jesus was with his disciples they asked him to teach them to pray. Having talked with them about the Lord’s Prayer, he illustrated prayer by the following: Said he: “Suppose you had a friend to whom you should go one night at midnight, and ask him to lend you three loaves of bread, for a friend had arrived unexpectedly, and you had nothing for him. Suppose he should answer, ‘Don’t trouble me; I’ve shut my house for the night, and my children and I are in bed; I can’t get up and attend to you.’ Now I tell you, though he wouldn’t attend to you on account of friendship, yet if you persist in urging your need he will get up and give you what you want. Now I say to you: ask and it shall be given you; seek and ye shall find; knock and it shall be opened unto you. Every one that asks shall receive; he who seeks shall find; to him who knocks it shall be opened. Suppose your son asks for a piece of bread, would you give him a stone? Suppose he asks for a fish, would you give him a serpent? If he ask for an egg, would you give him a scorpion? Now, if you with evil hearts and ignorant minds, yet know enough to take care of your children and give them proper things, don’t you suppose that your Heavenly Father knows what you need, and will give the Holy Spirit to those who ask him?”
  • 29. WARNING AGAINST COVETOUSNESS. Jesus had been talking about the loving care of the Heavenly Father, and one of the listeners interrupted him with a request that he would talk to his brother and get him to divide equally between them the property that had been left. Jesus asked him who he thought made him a judge, or a divider over them; and then, by the story he told them, he showed the covetous thought that was in the man’s heart. He reminded them that the important thing in a man’s life was not to have a great deal of property. Said he: “There was a certain man who grew rich; his harvests were so great that he wondered what he should do with all his grain. At last he decided to pull down his barns and build larger ones, and then say to his soul, ‘Soul, you have plenty of food, enough to last you many years; take your ease, eat, drink and be merry.’ But just then God spoke to him; He said, ‘Foolish man, this night your soul shall be called to leave the body; then who will have all these things which you have provided?’—Now,” said Jesus, “the man who plans for himself, laying up treasures for himself, and has none of the riches that God could give him, is like this poor, foolish man in the story.” Then He turned to His disciples and told them that living meant more than simply keeping the body alive and clothed.
  • 30. CONSIDER THE LILIES HOW THEY GROW.—Luke xii. 27.
  • 31. WARNING AGAINST FORMALISM. Jesus was traveling through the cities and villages on his way to Jerusalem, teaching as he went. One day a man asked him if many would be saved. He said all must strive to enter in at the straight gate, for many would try some other way and would not get in. He said, “It was like a feast spread for guests; and when once the master of the house had closed the door, no more could get in. Those who stood outside saying, ‘Lord, Lord, open the door for us,’ would only be answered with ‘I don’t know you.’ They might answer, ‘We have eaten and drank with you, and you have taught in our streets,’ for some of these people who would not follow Jesus had sat at table with him and heard his teachings. But he said the answer to any such would be, ‘I don’t know you; go away, you are wicked people.’—Then,” said Jesus, “there shall be weeping and gnashing of teeth;” Abraham, and Isaac, and Jacob would be inside, but those who would not come to him by the right way would be thrust out. People from every quarter shall come together and sit down in God’s kingdom. The Gentiles, who were the last to hear the good news, shall be among the first in heaven, and some of the Jews (God’s dear people who would not love Him) will not get in.
  • 32. JESUS EATETH WITH PUBLICANS AND SINNERS.—Mark ii. 16.
  • 33. THE GOSPEL FEAST. One Sabbath-day Jesus was taking dinner at the house of a Pharisee. He talked with the people at the table about humility of manner at the great feasts which were given in those days. Then one of the company said to him, “Blessed is he that shall eat bread in the kingdom of God.” I do not think he meant heaven, but rather the kingdom that he hoped the Messiah would set up on the earth. Jesus answered him in the form of a story about a man who made a great supper, sending out many invitations. When everything was ready he sent for his guests to come, and every one of them sent an excuse. One said he had bought a piece of ground and must go and see it, and begged to be excused; another said he had bought five yoke of oxen, and was going to prove them; another said he had just been married and couldn’t come. When the servant came back and told his master he was angry. He told his servants to go out quickly through the streets and bring all the lame people, and the blind people, and the poor people of every sort. So the servant did as he was told; but he said to his master, “There is room yet.” So the master told him to go out in the highways and hedges, and coax people to come to the supper, and fill the house, for none of those who were first invited should be allowed to taste of the supper.
  • 34. JESUS AND HIS DISCIPLES ON THE ROAD TO CÆSAREA.—Mark viii. 27.
  • 35. THE PRODIGAL SON. Jesus once, in teaching the people, told this story: “A man had two sons; the younger of them asked his father to give him the part of the property that would finally belong to him. So the father divided his wealth between them. A few days after that the younger son went a long journey, taking all his money with him; but he wasted it in wild and foolish living. When it was all gone there came a great famine to that country, and the foolish young man had nothing to live on. He went looking for work, and a man hired him to take care of swine. He was so hungry that he was willing to eat the husks that the swine had for food; and no one gave anything to him. Then he began to think of his home, and to remember how his father’s servants had plenty to eat, and here he was starving! Then he said, ‘I will arise and go to my father, and I will say to him, Father, I have sinned against heaven and before you. I am not worthy to be called your son; let me be one of your hired servants.’ So he went on his journey home. When he was yet a great way from the house, his father saw him and ran out to meet him, and put his arms around him and kissed him. Then the son said, ‘Father, I have sinned against heaven and against you; I am not worthy to be called your son.’ But the father said, ‘bring the best clothes in the house for him to wear, and put a ring on his hand, and shoes on his feet, and have the fatted calf killed, and make a feast, and let us eat and drink and be merry; for my son was the same to me as dead, and now he is alive again; he was lost, but now he is found.’ And they were merry.”
  • 36. RETURN OF THE PRODIGAL SON.—Luke xv. 20.
  • 37. THE RICH MAN AND LAZARUS. In order to explain to his disciples that there were two worlds for souls, Jesus once told them this story:—“There was a rich man who wore elegant clothing and lived richly every day. There was a poor, sick beggar, named Lazarus, lying at his gate. He wanted the crumbs which were left from the rich man’s table. His body was full of sores, and the dogs used to come and lick them. One day this poor man died, but God sent his angels and carried him to heaven. Then the rich man died, and was buried. His soul went to hell. One day, while he was in that place of pain and torment, he looked up, and away off he saw heaven, and Lazarus the beggar was there, with his head on Abraham’s bosom. He called to him: ‘Father Abraham, have mercy on me, and send Lazarus to dip the tip of his finger in water and cool my tongue, for I am tormented in this flame.’ But Abraham said: ‘Son, remember that while you were living you had plenty of good things, while Lazarus suffered at your gate. Now he is happy, and you are suffering. And, besides, there is a great gulf between you and us, so that if we wanted to come to you we could not; neither can you come here from that place.’ Then the rich man said, ‘I pray you send him to my father’s house to tell my five brothers about this dreadful place, so they need not come here.’ But Abraham said, ‘Why, they have the story of that place. Moses wrote about it, and the Prophets wrote about it; let them read it.’ But the rich man said, ‘O, Father Abraham, if one went back to them from the dead, they would repent.’ ‘No,’ said Abraham, ‘if they will not believe God’s own word, as Moses and the Prophets wrote it in the Bible, neither would they believe if one went to them from the dead.’”
  • 38. LAZARUS AT THE RICH MAN’S DOOR.—Luke xvi. 19.
  • 39. THE TEN LEPERS. One day Jesus, on his journey to Jerusalem, passed through a village in Samaria. He saw ten men who had the leprosy; they kept away from all other people, as the law obliged them to. But when they saw Jesus, they called out with loud voices, “Jesus, Master, have mercy on us!” Jesus said to them, “Go show yourselves to the priest.” This was what people who were cured of leprosy were obliged to do before they could go among the people. The priest had to give them a certificate to say that they were cured. As these ten men turned to go to the priest, as Jesus had told them, suddenly they found that they were well. One of them, as soon as he found it out, turned back and followed after Jesus, and when he reached him he bowed down at his feet, thanking him and praising God. He was from a Samaritan village; not one of the Lord’s chosen people, but a Gentile. Jesus said to him, “Didn’t I cure ten men? Where are the nine? Not one of them came back to thank me, except this Samaritan.” Then he said to the kneeling man, “Arise, and go on your way; your faith hath made you whole.”
  • 40. JESUS CURING THE TEN LEPERS.—Luke xvii. 14.
  • 41. WHOM THE LORD RECEIVES. When Jesus was on earth he met some people who thought that they were perfect, and they despised other people. One day he told them this story: “There were two men who went to the temple one day to pray. One of them was a Pharisee, the other a publican. The Pharisee said, ‘God, I thank thee that I am not like other men, extortioners, unjust, adulterers, or even as this man beside me. I fast twice in the week, and I give a tenth of all that I have.’ Then the publican prayed: he did not even go close to the holy place: he kept his eyes on the ground, and he struck his breast, which was a sign of deep humility, as he said, ‘God be merciful to me, a sinner’—I tell you,” said Jesus, “that man went back to his home justified, rather than the other, for every one who thinks too well of himself must be humbled; but those who are humble God will exalt.” The rest of the story is about some very little children being brought to Jesus. His disciples tried to have them sent away, for they did not understand Jesus; but he called the little ones to him and said: “Suffer little children to come unto me, and forbid them not, for of such is the kingdom of heaven. Truly I say to you, that any one who will not receive the kingdom of heaven with the faith of a little child shall never enter there.”
  • 42. THE PHARISEE AND THE PUBLICAN.—Luke xviii. 10.
  • 43. ZACCHEUS THE PUBLICAN. There was a man named Zaccheus, a rich man, a tax-gatherer, who wanted very much to see Jesus. One day, when Jesus was passing through the city of Jericho, Zaccheus, who was a small man and could not see over the heads of the crowd who were following Jesus, ran ahead of them and climbed into a sycamore tree. When Jesus reached the tree he looked up and said, “Zaccheus, make haste and come down; I want to go to your house to-day.” Then Zaccheus hurried down and joyfully took Jesus home with him. But the people murmured about it; they said, “He has gone to visit a wicked man.” Then Zaccheus talked with Jesus; he said to him, “Lord, I mean to give the half of all my goods to the poor; and if I have taken anything from any man wrongfully, I will give him back four times as much.” Then Jesus said to him, “This day is salvation come to your house. You are a Jew, a son of Abraham; you shall have the promised gift.”
  • 44. JUDAISM OVERTHROWN. Jesus, one day, talking with his disciples, said to them: “Take care that you are not deceived. There will be many coming in my name, saying, ‘I am Christ, and the end is near;’ but don’t follow after them. When you hear of wars and disturbances, don’t be frightened; these things must first come, but the end is not at once. Nation shall rise against nation, and kingdom against kingdom, and there shall be great earthquakes, and famines, and pestilences, and fearful sights; and great signs shall there be from heaven: and before these come, people will persecute you, and put you in prisons, and you shall be brought before kings and rulers, for my name’s sake. And you will have a chance to testify for me; but you need not plan what you shall say, for I will give you words that your enemies can neither answer nor resist. You will be betrayed by parents, brothers, relatives and friends, and some of you will be put to death; and you will be hated by men for my sake; but not a hair of your head shall perish. Be patient to the end, and your souls shall be saved. When you see Jerusalem surrounded with armies, then know that desolation is near. Then let them which are in Judea flee to the mountains, and let them which are in the midst of it depart out, and let not them which are in the countries enter thereinto.”
  • 45. JESUS FORETELLS THE DESTRUCTION OF THE TEMPLE.—Matt. xxiv. 2.
  • 46. THE LORD’S SUPPER. It was the evening before Jesus was to be crucified that these things happened which are in our lesson to-day. Jesus sent Peter and John to make ready the supper, that they might eat it together. He said to them: “When you get to the city of Jerusalem, a man will meet you, carrying a pitcher of water; follow him and stop at the same house. Tell the man of the house that the Master told you to ask him where the guest-chamber was in which he could eat the Passover with his disciples. He will show you a large upper room, furnished. In that room make all things ready.” It all happened just as he said, and they prepared the supper. When Jesus and the twelve disciples sat down he said to them, “I have longed to eat this Passover with you before I suffer, for I will not eat of it any more until it be fulfilled in the kingdom of God.” Then he took up the cup and gave thanks, and said, “Take this and divide it among yourselves, for I say unto you, I shall not drink of the fruit of the vine until the kingdom of God shall come.” And he took bread and gave thanks, and gave the bread to them, saying, “This is my body which is given for you; do this in remembrance of me.” After supper he took the cup and passed it to them, saying, “This cup is the new testament in my blood, which is shed for you.”
  • 48. THE CROSS. At the place which is called Calvary, our Lord was crucified, and on the cross with him hung two thieves, one on each side. The soldiers divided his clothes among them, casting lots which should have them. He prayed for them all; he said, “Father, forgive them, for they know not what they do.” The people and the rulers stood about him, looking at him and mocking. They said, “He saved others, let him save himself if he is Christ, the chosen one of God.” And the soldiers also mocked him, offering him vinegar to drink, and saying to him, “If you are the king of the Jews, save yourself.” Then they wrote on a tablet in Greek, and in Latin, and in Hebrew, “This is the King of the Jews,” and hung it over the cross. One of the thieves joined in the mocking, saying, “If you are Christ, save yourself and us;” but the other thief reproved him, asking him if he did not fear God, since they were suffering the same punishment. “They,” he said, “deserved their punishment, but the other had done nothing wrong.” Then he spoke directly to Jesus: he said, “Lord, remember me when thou comest into thy kingdom.” And instantly Jesus answered him in these words, “Verily I say unto you, To-day shalt thou dwell with me in Paradise.” These things happened about twelve o’clock. From that time until three o’clock the earth was dark; the sun hid away. When Jesus cried out with a loud voice, he said, “It is finished;” and then, “Father, into thy hands I commit my spirit;” and having said this, he died. Just then the veil which had always hidden the inner temple split in two from top to bottom.
  • 50. THE WALK TO EMMAUS. The third day after Jesus was buried, two of his friends walked to a village named Emmaus, which was about seven miles from Jerusalem. As they walked along they talked together about the sad things that had lately happened. At that moment Jesus himself came along and joined them, but they did not know him. He asked them what it was they were talking about, and why they were so sad. One of them, named Cleopas, asked him if he was a stranger in Jerusalem that he had not heard the strange, sad news. He asked them, “What news?” And Cleopas answered: “Why, about Jesus of Nazareth; he was a mighty prophet; his words and his deeds were wonderful; but our rulers condemned him to death and crucified him. We hoped that he was the one who was to redeem the people of Israel; but this is the third day since these things were done. Some women who were at the grave this morning, told us a strange story; they say his body is not there, and that they saw angels who said that he was alive; and some of our friends went to the grave and found that it was as the women said, but they did not see him.” Then Jesus said to them: “O what foolish people. How slow you are to believe all that the prophets wrote about this! Did they not tell that Christ must suffer these things and then enter into his glory?” Then he began with the books that Moses wrote, and explained what he and the other writers had said about Christ. When they drew near to Emmaus the stranger acted as though he was going further, but they begged him to stop with them, as the day was nearly gone. So he stopped with them, and as they sat down to the table together, suddenly something opened their eyes to know that it was Jesus who sat with them. He took some bread and blessed it, and gave them some. Then he vanished out of their sight.
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