1 Samuel 18:30; 1 Samuel 26:21

30 Then the commanders of the Philistines went out to battle, and it happened as often as they went out, that David behaved himself more wisely than all the servants of Saul. So his name was highly esteemed.

21 Then Saul said, "I have sinned. Return, my son David, for I will not harm you again because my life was precious in your sight this day. Behold, I have played the fool and have committed a serious error."