181 David now mustered the men who were with him and appointed generals and captains to lead them. 2 He sent the troops out in three groups, placing one group under Joab, one under Joab's brother Abishai son of Zeruiah, and one under Ittai, the man from Gath. The king told his troops, "I am going out with you." 3 But his men objected strongly. "You must not go," they urged. "If we have to turn and run-and even if half of us die-it will make no difference to Absalom's troops; they will be looking only for you. You are worth 10,000 of us, and it is better that you stay here in the town and send help if we need it." 4 "If you think that's the best plan, I'll do it," the king answered. So he stood alongside the gate of the town as all the troops marched out in groups of hundreds and of thousands.
Matthew Henry's Commentary on 2 Samuel 18:1-4
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.