1 Samuel 23:7-9

7When Saul was told that David had gone to Keilah, he said, “God has delivered him into my hand, for he has trapped himself by entering a town with gates and bars.”

8Then Saul summoned all his troops to go to war at Keilah and besiege David and his men.

9When David learned that Saul was plotting evil against him, he said to Abiathar the priest, “Bring the ephod.”