1 Samuel 24:16-19

16And it came to pass, when David had finished speaking these words to 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 rewarded me with good, though I have rewarded thee with evil. 18And thou hast showed this day how thou hast dealt with me: forasmuch as when the LORD had delivered me into thy hand, thou didst not kill me.1 19For if a man findeth his enemy, will he let him go away well? therefore the LORD reward thee with good for what thou hast done to me this day.