181 And David numbered the people who were with him, and set captains of thousands and captains of hundreds over them. 2 Then David sent out one third of the people under the hand of Joab, one third under the hand of Abishai the son of Zeruiah, Joab's brother, and one third under the hand of Ittai the Gittite. And the king said to the people, "I also will surely go out with you myself." 3 But the people answered, "You shall not go out! For if we flee away, they will not care about us; nor if half of us die, will they care about us. But you are worth ten thousand of us now. For you are now more help to us in the city." 4 Then the king said to them, "Whatever seems best to you I will do." So the king stood beside the gate, and all the people went out by hundreds and by thousands. 5 Now the king had commanded Joab, Abishai, and Ittai, saying, "Deal gently for my sake with the young man Absalom." And all the people heard when the king gave all the captains orders concerning Absalom. 6 So the people went out into the field of battle against Israel. And the battle was in the woods of Ephraim. 7 The people of Israel were overthrown there before the servants of David, and a great slaughter of twenty thousand took place there that day. 8 For the battle there was scattered over the face of the whole countryside, and the woods devoured more people that day than the sword devoured.
Matthew Henry's Commentary on 2 Samuel 18:1-8
Commentary on 2 Samuel 18:1-8
(Read 2 Samuel 18:1-8)
How does David render good for evil! Absalom would have only David smitten; David would have only Absalom spared. This seems to be a resemblance of man's wickedness towards God, and God's mercy to man, of which it is hard to say which is most amazing. Now the Israelites see what it is to take counsel against the Lord and his anointed.