1) A landowner went to the marketplace multiple times throughout the day to hire workers for his vineyard, paying each a denarius regardless of the hour they were hired.
2) When paying the workers at the end of the day, he paid those hired last first and those hired first last, giving each a denarius.
3) The workers hired first complained, as those hired last had only worked one hour, but the landowner reminded them they agreed to the original wage and that he has a right to be generous with his money.