I'm really very frustrated. I've read and searched but haven't been able to find this in the New Testament. PLEASE tell the chapter and verse.
Many thanks.
Not all of the Old Testament prophesies have been fulfilled. In Ezekiel 37:23-28 God promises to restore Israel forever, while there will no longer be any apostasies.
That did not happen when the exiled Jews returned from Babylon, where they dwelt during the time of that prophesy, as they were occupied by Rome and then scattered again. And the current state of Israel is nothing like the prophesy describes either, so IMHO that prophesy still has not been fulfilled, but many people believe the current state of Israel is the one described in the prophesy.
As to how the prophesy will be fulfilled, one can only speculate, and my Bible tells me not to bother trying to anticipate prophesies, but only to recognize them when they come to pass.
My conclusion: Every enemy that displaces Israel ends up losing in the long run, but in the meantime they are used by God to discipline Israel. So I would thus advise any entity that has animosity toward the state of Israel to abandon hope of possessing that land, as God has special interest in the geography and the children of Jacob that never bodes well for anyone else.