'Killing' in the Bible

He risked his life and struck down the Philistine, and the LORD brought about a spectacular deliverance for all Israel. You saw that and rejoiced, so why would you do wrong and shed innocent blood by killing David without cause?"

Looke, my father, look! The corner of your robe is in my hand. Indeed, by my cutting off the corner of your robe and not killing you, you may know and understand that I have no evil intent or transgression I haven't wronged you, even though you are hunting me to take my life.