1 Samuel 24:16-18

16And it came to pass, when David had made an end of speaking these words unto Saul, that Saul said, Is this thy voice, my son David? And Saul lifted up his voice, and wept.

17And he said to David, Thou art more righteous than I: for thou hast rendered unto me good, whereas I have rendered unto thee evil.

18And thou hast declared this day how that thou hast dealt well with me: forasmuch as when the LORD had delivered me up into thine hand, thou killedst me not.