And when Saul saw David go forth against the Philistine, he said unto Abner, the commander of the army, Abner, whose son is this youth? And Abner said, As your soul lives, O king, I cannot tell.

But Abner the son of Ner, captain of Saul’s army, took Ish-bosheth the son of Saul, and brought him over to Mahanaim;

And when Abner had returned to Hebron, Joab took him aside in the gate to speak with him quietly, and struck him there under the fifth rib, so that he died, for the blood of Asahel his brother.