Romans 11:2-6

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.