In contrast to Paul’s first letter to the church in Thessalonica, which was warm and affectionate, this letter takes a more formal, authoritative tone. It is more theological in nature; it also contains teaching about the return, or “second coming” of Jesus.
Not only does Paul encourage the Thessalonian church in this letter, but he also scolds them for not living and acting befitting of followers of Jesus, including the need to guard against false teaching or heresy.
A lifelong student of the Bible, Peter DeHaan, PhD, wrote the 1,000-page website ABibleADay.com to encourage people to explore the Bible. His main blog and many books urge Christians to push past the status quo and reconsider how they practice their faith in every area of their lives.