1 Samuel 23:7-9

23:7 When Saul was told that David had come to Keilah, Saul said, “God has delivered him into my hand, for he has boxed himself into a corner by entering a city with two barred gates.” 23:8 So Saul mustered all his army to go down to Keilah and besiege David and his men.

23:9 When David realized that Saul was planning to harm him, he told Abiathar the priest, “Bring the ephod!”