1 Samuel 24:16-22

16And as soon as David had ended speaking these words to Saul, 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 good, whereas I have rewarded thee evil. 18And thou hast shewed this day how that thou hast dealt well with me, forasmuch as when Jehovah had delivered me up into thy hand, thou didst not kill me. 19For if a man find his enemy, will he let him go well away? wherefore Jehovah reward thee good for that thou hast done to me this day. 20And now behold, I know that thou shalt certainly be king, and that the kingdom of Israel shall be established in thy hand. 21Swear now therefore to me by Jehovah, that thou wilt not cut off my seed after me, and that thou wilt not destroy my name out of my father's house. 22And David swore to Saul. And Saul went home; and David and his men went up to the stronghold.