I Samuel 23:4-7

Then David inquired of the LORD once again. And the LORD answered him and said, “Arise, go down to Keilah. For I will deliver the Philistines into your hand.” And David and his men went to Keilah and fought with the Philistines, struck them with a mighty blow, and took away their livestock. So David saved the inhabitants of Keilah. Now it happened, when Abiathar the son of Ahimelech fled to David at Keilah, that he went down with an ephod in his hand. And Saul was told that David had gone to Keilah. So Saul said, “God has delivered him into my hand, for he has shut himself in by entering a town that has gates and bars.”