1 Samuel 23:14, 23

And David remained in the strongholds in the wilderness, in the hill country of the wilderness of Ziph. And Saul sought him every day, but God did not give him into his hand.

See therefore and take note of all the lurking places where he hides, and come back to me with sure information. Then I will go with you. And if he is in the land, I will search him out among all the thousands of Judah.”