1 Samuel 24:10, 18

This day you have seen with your own eyes how the LORD delivered you into my hands in the cave. Some urged me to kill you, but I spared you; I said, ‘I will not lay my hand on my lord, because he is the LORD’s anointed.’

You have just now told me about the good you did to me; the LORD delivered me into your hands, but you did not kill me.