I can't imagine where you are getting your ideas. Could you give me something more specific? Which part of the NT goes against Israel being restored? This is what I read in the NT:
Rom 11:2,
God hath not cast away his people which he foreknew. Wot ye not what the scripture saith of Elias? how he maketh intercession to God against Israel, saying,
I take it you've not read Romans chapters 9 through 11. If you did, you must have skimmed it. After all, I think it's only been a few minutes since I suggested you read it. If you did read it, try reading it again only slower this time. To be sure, He does speak of Israel's faults, but here is little doubt of God's unconditional love for them. It just oozes out from the pages.