1) 1st and 2nd Thessalonians focus on Christ's second coming, providing encouragement, comfort, and a warning to live holy lives. 2) Paul founded the church in Thessalonica during his second missionary journey and sent this letter from Corinth to encourage the persecuted church to remain steadfast. 3) The letter teaches on holiness, love, diligence, hope, and obedience as they await Christ's return, ending with a prayer for their sanctification.