When Saul was told that David went to Keilah, Saul said, “God has delivered him into my hands. He has trapped himself by going into a city which has ⌞a gate with⌟ a double door ⌞held shut by⌟ a bar.”
David lived in fortified camps in the desert, and he lived in fortified camps in the mountains of the desert of Ziph. Saul was always searching for him, but God didn’t let him capture David.