1 Samuel 23:14-18

David stayed in the wilderness in the strongholds, and remained in the hill country in the wilderness of Ziph. And Saul searched for him every day, but God did not hand him over to him. Saul Pursues David

Now David saw that Saul had come out to seek his life while David was in the wilderness of Ziph, at Horesh.

And Jonathan, Saul’s son, set out and went to David at Horesh, and encouraged him in God.

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 second in command to you; and Saul my father knows that as well.”

So the two of them made a covenant before the Lord; and David stayed at Horesh, while Jonathan went to his house.