1 Kings 2:5-6, 31-33

“Also, you remember what Joab son of Zeruiah did to me. He killed the two commanders of Israel’s armies: Abner son of Ner and Amasa son of Jether. He did this as if he and they were at war, although it was a time of peace. He put their blood on the belt around his waist and on his sandals on his feet. Punish him in the way you think is wisest, but do not let him die peacefully of old age.

Then the king ordered Benaiah, “Do as he says! Kill him there and bury him. Then my family and I will be free of the guilt of Joab, who has killed innocent people. Without my father knowing it, he killed two men who were much better than he was—Abner son of Ner, the commander of Israel’s army, and Amasa son of Jether, the commander of Judah’s army. So the LORD will pay him back for those deaths. Joab and his family will be forever guilty for their deaths, but there will be peace from the LORD for David, his descendants, his family, and his throne forever.”