1 Samuel 23:8

6When Abiathar the son of Ahimelech fled to David to Keilah, he came down with an ephod in his hand.

7Saul was told that David had come to Keilah. Saul said, “God has delivered him into my hand, for he is shut in by entering into a town that has gates and bars.”

8Saul summoned all the people to war, to go down to Keilah to besiege David and his men.

9David knew that Saul was devising mischief against him. He said to Abiathar the priest, “Bring the ephod here.”

10Then David said, “O LORD, the God of Israel, your servant has surely heard that Saul seeks to come to Keilah to destroy the city for my sake.