I would direct you, first, to Chapter 2, verses 16-18 of Paul's second letter to Timothy:

"Have nothing to do with pointless philosophical discussions--they only lead further and further away from the true religion. Talk of this kind corrodes like gangrene, as in the case of Hymenaeus and Phlietus, the men who have gone right away from the truth and claim that the resurrection has already taken place...

This is a flagrant contradiction of Chapter 27, verses 52-53 of the Gospel of Matthew, which is a figurative description of the revelation of the memories of previous lives--i.e., "the resurrection"--received by some of the immediate followers of Jesus.

So, for these immediate followers of Jesus, "the resurrection" had "already taken place".

Oh, by the way, the "pointless philosophical discussion" was over whether "the resurrection" is the Egyptian 'god of the dead' doctrine of the physical raising of a dead body from the grave--the position taken by Pharisee Paul--or whether it was related to memories of previous lives.

Michael