1 Kings 2:5-6

“And don’t forget what Joab son of Zeruiah did to the two commanders of Israel’s army, to Abner son of Ner and to Amasa son of Jether. He murdered them in cold blood, acting in peacetime as if he were at war, and has been stained with that blood ever since. Do what you think best with him, but by no means let him get off scot-free—make him pay.