I think Romans 11: 25-27 addresses your concern on Israel
25For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in.
26And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
27For this is my covenant unto them, when I shall take away their sins.
“I think Romans 11: 25-27 addresses your concern on Israel.”...
I have no concern on Israel as related to your general thesis posted. I see the New Testament give over the People of God, clearly to the Church with 12 Apostles, as foreshadowed by, Israel and the 12 Tribes. Scripture snatching is deplorable for me, I can only recommend the entire context of the New Testament, sans the poultry pecking of the Word going on.