1 Timothy provides instructions to Timothy on organizing the church in Ephesus and setting moral and spiritual guidelines for church leadership. It addresses conducting worship services properly, qualifications for overseers and deacons, and how preachers should lead by example in their teachings and lives. Key themes include order in the church, love, godliness, and pursuing righteousness. The purpose is to ensure the church upholds the truth and believers know how to behave with good conduct.