1 Samuel 24:16-22

16When David finished speaking these words to Saul, Saul said, “Is that your voice, my son David?” Then Saul wept loudly.

17He said to David, “You are more innocent than I, for you have treated me well, even though I have tried to harm you!

18You have explained today how you have treated me well. The Lord delivered me into your hand, but you did not kill me.

19Now if a man finds his enemy, does he send him on his way in good shape? May the Lord repay you with good this day for what you have done to me.

20Now look, I realize that you will in fact be king and that the kingdom of Israel will be established in your hand.

21So now swear to me in the Lord’s name that you will not kill my descendants after me or destroy my name from the house of my father.”

22David promised Saul this on oath. Then Saul went to his house, and David and his men went up to the stronghold.