By Dr. Robert E. Picirilli
Paul strongly preached that Jesus was soon to return. He considered “waiting for God’s Son from heaven” the very epitome of Christian conversion (see 1:9, 10). So the Thessalonian believers fully expected Jesus to return any moment.
While he was preaching these things in Thessalonica, Paul was forced to leave before giving detailed teaching on the subject (compare 2:I7 and 3:10). A few months passed and Jesus still had not returned. This must have troubled the Thessalonian believers.
Part of what worried them is that some of their members died during this time. The friends and family of these Christian deceased wondered what would become of them. They did not yet know there would be a resurrection of the dead. Unprepared for such things, the Thessalonian Christians were uncertain and anxious. In this passage, Paul puts their minds at ease. […]