When Abner arrived at Hebron, Joab met him in the gateway, pulled him aside to talk in private, and then stabbed him in the stomach. So he got his revenge against Abner. Joab killed Abner because Abner had killed Joab’s brother Asahel.
You are only what you were created to be—a human, and it is useless to argue about it. People cannot argue with God about this because he is more powerful than they are, and a long argument will not change that fact.
Saul said to Michal, “Why did you trick me like this? You let my enemy escape, and now he is gone.” Michal answered Saul, “David told me he would kill me if I didn’t help him escape.”
Abner didn’t want to hurt Asahel, so he said to Asahel, “Stop chasing me—go after one of the young soldiers. You could easily take his armor for yourself.” But Asahel refused to stop chasing Abner.