The difference is the difference in perspective, whether our perspective of times, or Gods eternal (timeless) perspective. For full understanding, our perspective has to reconcile with God's. The only way that is possible is both coming together when "but each one in his own order" passes from time to eternity. Which has occurred throughout all of history...each one in his own order.
So, yes, in Matthew it speaks of the angels gathering from the four winds and all the earth, of course--but it can only happen simultaneously if it is that twinkling of an eye between time and eternity. Which then is confirmed by Paul, saying "but"--"but each [one] (person) in his own order." By definition, that is how "each one" is defined.
Why is that important? Because it changes (proves wrong) what most people believe. That--by definition--is "strong delusion."
