Romans 11:1-7, 28-29

I say then, Did God cast off his people? God forbid. For I also am an Israelite, of the seed of Abraham, of the tribe of Benjamin. God did not cast off his people which he foreknew. Or know ye not what the scripture saith of Elijah? how he pleadeth with God against Israel: Lord, they have killed thy prophets, they have digged down thine altars; and I am left alone, and they seek my life. But what saith the answer of God unto him? I have left for myself seven thousand men, who have not bowed the knee to Baal. Even so then at this present time also there is a remnant according to the election of grace. But if it is by grace, it is no more of works: otherwise grace is no more grace. What then? That which Israel seeketh for, that he obtained not; but the election obtained it, and the rest were hardened

As touching the gospel, they are enemies for your sake: but as touching the election, they are beloved for the fathers’ sake. For the gifts and the calling of God are not repented of.