“According to Paul, those of the first resurrection are not coming back to earth.”
No, the verse does not actually say that. It says we will be caught up into the air to meet the Lord (who is descending from Heaven, just as Revelation details), and that we shall always be with the Lord. If the Lord is already not in Heaven when we meet Him, but descending to the earth, then why should we assume that we would go straight to Heaven and stay there for all time? That would contradict the verse you quoted, since Christ isn’t in Heaven at that moment, so we would have to leave Him in order to get there.
>>>No, the verse does not actually say that. It says we will be caught up into the air to meet the Lord (who is descending from Heaven, just as Revelation details), and that we shall always be with the Lord.<<<
I recommend you read it again. It is clear from that passage that those of the first resurrection never return to earth. There is also nothing else in the New Testament that supports them, or Christ, returning to earth.
Philip