By this time Absalom had probably obtained the great object of his ambition; he had mustered Israel from Dan to Beersheba, and found himself at the head of an array very magnificent in appearance, but, like most Oriental gatherings of the kind, somewhat unwieldy and unworkable. This great conglomeration was now in the immediate neighbourhood of Mahanaim, and must have seemed as if by sheer weight of material it would crush any force that could be brought against it. We read that the battle took place "in the wood of Ephraim." This could not be a wood in the tribe of Ephraim, for that was on the other side of Jordan, but a wood in Gilead, that for some reason unknown to us had been called by that name. The whole region is still richly wooded, and among its prominent trees is one called the prickly oak. A _dense_ wood would obviously be unsuitable for battle, but a wooded district, with clumps here and there, especially on the hill-sides, and occasional trees and brushwood scattered over the plains, would present many advantages to a smaller force opposing the onset of a larger. In the American war of 1755 some of the best troops of England were nearly annihilated in a wood near Pittsburg in Pennsylvania, the Indians levelling their rifles unseen from behind the trees, and discharging them with yells that were even more terrible than their weapons. We may fancy the three battalions of David making a vigorous onslaught on Absalom's troops as they advanced into the wooded country, and when they began to retreat through the woods, and got entangled in brushwood, or jammed together by thickset trees, discharging arrows at them, or falling on them with the sword, with most disastrous effect. "There was a great slaughter that day of twenty thousand men. For the battle there was scattered over the face of all the country, and the wood devoured more people that day than the sword devoured." Many of David's men were probably natives of the country, and in their many encounters with the neighbouring nations had become familiar with the warfare of "the bush." Here was one benefit of the choice of Mahanaim by David as his rallying-ground. The people that joined him from that quarter knew the ground, and knew how to adapt it to fighting purposes; the most of Absalom's forces had been accustomed to the bare wadies and limestone rocks of Western Palestine, and, when caught in the thickets, could neither use their weapons nor save themselves by flight.
Very touching, if not very business-like, had been David's instructions to his generals about Absalom: "The king commanded Joab and Abishai and Ittai saying, Deal gently for my sake with the young man, even with Absalom. And all the people heard when the king gave all the captains charge concerning Absalom." It is interesting to observe that David fully expects to win. There is no hint of any alternative, as if Absalom would not fall into their hands. David knows that he is going to conquer, as well as he knew it when he went against the giant. The confidence which is breathed in the third Psalm is apparent here. Faith saw his enemies already defeated. "Thou hast smitten all mine enemies upon the cheekbone; Thou hast broken the teeth of the ungodly. Salvation belongeth unto the Lord; Thy blessing is upon Thy people." In a pitched battle, God could not give success to a godless crew, whose whole enterprise was undertaken to drive God's anointed one from his throne. Temporary and partial successes they might have, but final success it was morally impossible for God to accord. It was not the spirit of his own troops, nor the undisciplined condition of the opposing host, that inspired this confidence, but the knowledge that there was a God in Israel, who would not suffer His anointed to perish, nor the impious usurper to triumph over him.