If Paul was writing to living Christians, and he was, And if those Christians were being persecuted for their faith, and they were, And if Paul promised those living Christians relief from that persecution, and he did, and if Paul promised those living Christians that their relief would come "when the Lord Jesus is revealed from heaven", and he did, Then if Jesus did not come in the lifetime of those living Christians and give them relief from that present persecution, then, Paul was a false prophet! This is one of the greatest challenges to Biblical inspiration to be found! But, Paul did not lie, Jesus did not fail! Paul was vindicated, Jesus did not fail! This is one of the most concise, powerful, convincing expositions of 2 Thessalonians 1 that you will find. Powerful, powerful book!