Commentators note that Abner's second warning to Asahel was a genuine plea, not just a battle taunt. He was deeply concerned about the future, specifically how he could ever 'hold up his face to Joab' if he killed his brother. John Gill suggests this reveals Abner's political foresight, anticipating a day when he might need to make peace with David's side and would require Joab's goodwill.