C. F. Keil and Franz Delitzsch on 2 Samuel 2:17-19

2Sa 2:17-19

As this single combat decided nothing, there followed a general and very sore or fierce battle, in which Abner and his troops were put to flight by the soldiers of David. The only thing connected with this, of which we have any further account, is the slaughter of Asahel by Abner, which is mentioned here (2Sa 2:18-23) on account of the important results which followed. Of the three sons of Zeruiah, viz., Joab, Abishai, and Asahel, Asahel was peculiarly light of foot, like one of the gazelles; and he pursued Abner most eagerly, without turning aside to the right or to the left.