I Samuel 23:17

17 "Don't be afraid," he said. "My father Saul will not lay a hand on you. You will be king over Israel, and I will be second to you. Even my father Saul knows this."

17 And he said unto him, Fear not; for the hand of Saul my father shall not find thee; and thou shalt be king over Israel, and I shall be next unto thee; and that also Saul my father knoweth.