1 Samuel 23:7; 1 Samuel 26:17

7 And it was told Saul that David was come to Keilah. And Saul said, God hath delivered him into mine hand; for he is shut in, by entering into a town that hath gates and bars.

17 And Saul knew David's voice, and said, Is this thy voice, my son David? And David said, It is my voice, my lord, O king.