David saw in Abner not only a great warrior, but also a means by which the long war between David’s men and Saul’s could have been shortened. Joab’s vengeance ruined those hopes. It also put David’s reputation in Danger. David was wise to spend extra time and effort proving that Abner’s death was not at David’s command. If he had not, the gains made by Abner before his death would have been complete losses.
LORD, give us wisdom to protect our reputations, so that your name is not blasphemed.
2 Samuel 3