Paul's first letter to the Thessalonians was one of his earliest epistles, if not his earliest. Yet even in this early letter, we can see the seeds of Paul's ministry as a pastor and theologian being planted and watered. Paul had the heart of a pastor. He spoke to the Thessalonians with the love of a pastor. He gave them practical advice for living the Christian life. We can also see Paul, the theologian. In this brief letter, he introduced diverse theological topics from putting on the armor of God to eschatology. This commentary on 1 Thessalonians was originally produced for use as an eight-lesson Bible study within the MINTS International Seminary curriculum. It is written from a Reformed perspective.