David was not present with his troops on this occasion, the management of them being entrusted to Joab, his sister's son. Here was another of the difficulties of David--a difficulty which embarrassed him for forty years. He was led to commit the management of his army to his warlike nephew, although he appears to have been a man very unlike himself. Joab is much more of the type of Saul than of David. He is rough, impetuous, worldly, manifesting no faith, no prayerfulness, no habit or spirit of communion with God. Yet from the beginning he threw in his lot with David; he remained faithful to him in the insurrection of Absalom; and sometimes he gave him advice which was more worthy to be followed than his own devices. But though Joab was a difficulty to David, he did not master him. The course of David's life and the character of his reign were determined mainly by those spiritual feelings with which Joab appears to have had no sympathy. It was unfortunate that the first stage of the war should have been in the hands of Joab; he conducted it in a way that must have been painful to David; he stained it with a crime that gave him bitter pain.
The practice of deciding public contests by a small and equal number of champions on either side, if not a common one in ancient times, was, at any rate, not very rare. Roman history furnishes some memorable instances of it: that of Romulus and Aruns, and that of the Horatii and the Curiatii; while the challenge of Goliath and the proposal to settle the strife between the Philistines and the Hebrews according to the result of the duel with him had taken place not many years before. The young men were accordingly chosen, twelve on either side; but they rushed against each other with such impetuosity that the whole of them fell together, and the contest remained undecided as before. Excited probably by what they had witnessed, the main forces on either side now rushed against each other; and when the shock of battle came, the victory fell to the side of David, and Abner and his troops were signally defeated. On David's side, there was not a very serious loss, the number of the slain amounting to twenty; but on the side of Abner the loss was three hundred and sixty. To account for so great an inequality we must remember that in Eastern warfare it was in the pursuit that by far the greatest amount of slaughter took place. That obstinate maintenance of their ground which is characteristic of modern armies seems to have been unknown in those times. The superiority of one of the hosts over the other appears usually to have made itself felt at the beginning of the engagement; the opposite force, seized with panic, fled in confusion, followed close by the conquerors, whose weapons, directed against the backs of the fugitive, were neither caught on shields, nor met by counter-volleys. Thus it was that Joab's loss was little more than the twelve who had fallen at first, while that of Abner was many times more.
Among those who had to save themselves by flight after the battle was Abner, the captain of the host. Hard in pursuit of him, and of him only, hastened Asahel, the brother of Joab. It is not easy to understand all the circumstances of this pursuit. We cannot but believe that Asahel was bent on killing Abner, but probably his hope was that he would get near enough to him to discharge an arrow at him, and that in doing so he would incur no personal danger. But Abner appears to have remarked him, and to have stopped his flight and faced round to meet him. Abner seems to have carried sword and spear; Asahel had probably nothing heavier than a bow. It was fair enough in Abner to propose that if they were to be opponents, Asahel should borrow armour, that they might fight on equal terms. But this was not Asahel's thought. He seems to have been determined to follow Abner, and take his opportunity for attacking him in his own way. This Abner would not permit; and, as Asahel would not desist from his pursuit, Abner, rushing at him, struck him with such violence with the hinder end of his spear that the weapon came out behind him. "And Asahel fell down there, and died in the same place; and it came to pass that as many as came to the place where Asahel fell down and died stood still." Asahel was a man of consequence, being brother of the commander of the army and nephew of the king. The death of such a man counted for much, and went far to restore the balance of loss between the two contending armies. It seems to have struck a horror into the hearts of his fellow-soldiers; it was an awful incident of the war. It was strange enough to see one who an hour ago was so young, so fresh and full of life, stretched on the ground a helpless lump of clay; but it was more appalling to remember his relation to the two greatest men of the nation--David and Joab. Certainly war is most indiscriminate in the selection of its victims; commanders and their brothers, kings and their nephews, being as open to its catastrophes as any one else. Surely it must have sent a thrill through Abner to see among the first victims of the strife which he had kindled one whose family stood so high, and whose death would exasperate against him so important a person as his brother Joab.