Second Thessalonians was written a short time after 1 Thessalonians to clear up misconceptions about the Second Coming that the first letter had failed to answer.
Although the letter was written to Gentiles, it assumes some knowledge of the Old Testament. According to Donald Guthrie, this was typical of early Christian teaching (New Testament Introduction, rev. ed. [Downers Grove, Ill.: InterVarsity Press, 1990], p. 596).
Paul most likely wrote the letter from Corinth. In addition to clarifying their understanding about Christ's return, Paul addressed some ongoing problems in the church in dealing with idleness. This book offered its readers comfort and insight about faith and end times, as well as a call to take responsibility. May it both challenge and encourage you as well.