I Samuel 23:7

7 Saul was told that David had gone to Keilah, and he said, "God has delivered him into my hands, for David has imprisoned himself by entering a town with gates and bars."

7 And news was given to Saul that David had come to Keilah. And Saul said, Now God has given him into my hands; for by going into a walled town with locked doors, he has let himself be shut in.