... he'd totally flip his mind at what society has come to, especially the use of drugs, booze, violence, and porn. St. Paul always taught that people would lose their faith through the appearance and "teachings" of the antichrist. He would not believe it unless he saw it with his own eyes that people would surrender their faith so easily without the antichrist, that they would throw it all away for "relativism" and hedonism. St Paul would never have envisioned a world that regardless if Christian, other faith, or pagan, that the people did not put God first in their lives, because in his time, that is how it was - everyone had Godly respect and fear. He who had seen such horrors in his lifetime would never believe what he would see today.
Honestly, this is another reason I'm glad that the faithful in heaven are totally separated from the woes of living humans and what they do and worse, what they tolerate.