The word in that verse actually means inside
G1787 ἐντός entos (en-tos') adv.
inside (adverb or noun).
It's not realistic to think that Ezekiel 38/39 pertains to this time because there is really no way Israel could be invaded by massive armies. Israel would simply nuke them if they got close enough to threaten them.
No one knew, what the cross was meant to do, when that day happened. Not until the resurrected Jesus revealed to the disciples this truth. (Acts 1, 2) Jesus had to go to death willingly first, (Which they did not understand, when he did that) then Pentecost came after Jesus was risen and hung out with the disciples for forty days, before leaving and Father began using willing vessels to tell others of his love of Son for them in righteousness given them. No self-righteousness is given.
We have righteousness given, it is not ours, it is God's in risen Son for us to be new in true love of 1 Cor 13:4-7 imputed by God and then the new born-again person becomes as real as the air one breaths and does not normally see, yet now do, in the risen Son given anyone that Daddy, Father, PaPa approves of as sincere and wants nothing else, knows from God Father everything needed will be supplied, even if not got it yet. That does not mean to not work physically either. If one does not work, then one does not eat. Paul continued being a tent maker, did not care for people's gifts
Thanks