1 Samuel 23:15-18

Now David became aware that Saul had come out to seek his life while David was in the wilderness of Ziph at Horesh. And Jonathan, Saul’s son, arose and went to David at Horesh, and encouraged him in God. Thus he said to him, “Do not be afraid, because the hand of Saul my father will not find you, and you will be king over Israel and I will be next to you; and Saul my father knows that also.” So the two of them made a covenant before the LORD; and David stayed at Horesh while Jonathan went to his house.