The LORD will pay him back for the blood he spilled. Joab attacked two men. He killed them with his sword. And my father David didn't even know anything about it. "Joab killed Abner, the son of Ner. Abner was the commander of Israel's army. Joab also killed Amasa, the son of Jether. Amasa was the commander of Judah's army. Abner and Amasa were better men than Joab is. They were more honest than he is.