All the saved from Adam until the last person to be saved will be in the first resurrection.
So "ALL" (all saints of all times) are resurrected at the "6th Trumpet/2nd Woe" time slot (along with the Two Witnesses), according to you??
None of this (idea) matches "but EACH [G1538] IN HIS OWN ORDER" that 1Cor15:23 speaks of, and that IS Scripture (I pointed out).