1 Samuel 24:16-22

16 When David stopped speaking, Saul said, ‘Is that really you, David my son?’ Then Saul started to weep loudly. 17 He said to David, ‘You are a better man than I am. You have been kind to me even when I have tried to hurt you. 18 You have shown me today how kind you have been to me. The Lord gave you a chance to hurt me, but you did not kill me. 19 If someone catches his enemy, he does not let him escape. But you have not tried to hurt me today. So I ask that the Lord will bless you in return. 20 I know that you will be the king of Israel one day. The kingdom will be strong when you rule. 21 So promise me in the Lord's name that you will not kill any of my descendants. Please make sure that people do not forget my family's name.’

22 So David made a strong promise to Saul. Then Saul returned to his home. But David and his men went back to the place where they had been hiding.