Romans 11:1, 2, 20

I ask then: Did God reject his people? By no means! I am an Israelite myself, a descendant of Abraham, from the tribe of Benjamin.

God did not reject his people, whom he foreknew. Don’t you know what Scripture says in the passage about Elijah—how he appealed to God against Israel

Granted. But they were broken off because of unbelief, and you stand by faith. Do not be arrogant, but tremble.