Paul writes to the Thessalonians and speaks to them about the Second Coming of Jesus Christ, Apostasy and Missionary Work.
In Chapter 1: Paul urges the members to have faith through their afflictions, that they may be rewarded.
In Chapter 2: Paul explains that False Teachers can lead someone away from the Gospel of Jesus Christ. When the power and authority are not present it is a period known as Apostasy.
In Chapter 3: Paul asks the members to pray for him and the Apostles so the work of the Gospel will continue to move forward as they preach and bring more souls unto Christ.