Look at verse 1. When Paul writes, “But concerning the times and the seasons, brethren,” it probably indicates that he was responding to a question that the Thessalonians sent to Paul through Timothy. They may have wanted to know how long they would have to wait until Jesus returned. Paul said, “But concerning the times and the seasons, brethren, you have no need that I should write to you.” It appears that he had already instructed them on the Second Coming of Jesus when he was with them, but he was willing to put this teaching from the Lord in writing.
