1 Samuel 24:18 in the King James Version
And thou hast shewed this day how that thou hast dealt well with me: forasmuch as when the LORD had delivered me into thine hand, thou killedst me not.
Context
17 He said to David, “You are more righteous than I; for you have done good to me, whereas I have done evil to you.
18 You have declared today how you have dealt well with me, because when the LORD had delivered me up into your hand, you didn’t kill me.
19 For if a man finds his enemy, will he let him go away unharmed? Therefore may the LORD reward you good for that which you have done to me today.