So Joab and Abishai his brother slew Abner, because he had killed their brother Asahel at Gibeon in the battle.

So Joab and Abishai his brother put Abner to death, because he had put to death their brother Asahel in the fight at Gibeon.

Ουτως ο Ιωαβ και Αβισαι ο αδελφος αυτου εθανατωσαν τον Αβενηρ, διοτι ειχε θανατωσει Ασαηλ τον αδελφον αυτων εν Γαβαων εν τη μαχη.

So Joab and Abishai his brother slew Abner, because he had slain their brother Asahel at Gibeon in the battle.