11 "What?" Joab demanded. "You saw him there and didn't kill him? I would have rewarded you with ten pieces of silver and a hero's belt!" 12 "I would not kill the king's son for even a thousand pieces of silver, " the man replied to Joab. "We all heard the king say to you and Abishai and Ittai, 'For my sake, please spare young Absalom.' 13 And if I had betrayed the king by killing his son-and the king would certainly find out who did it-you yourself would be the first to abandon me." 14 "Enough of this nonsense," Joab said. Then he took three daggers and plunged them into Absalom's heart as he dangled, still alive, in the great tree. 15 Ten of Joab's young armor bearers then surrounded Absalom and killed him.
Matthew Henry's Commentary on 2 Samuel 18:11-15
Commentary on 2 Samuel 18:9-18
(Read 2 Samuel 18:9-18)
Let young people look upon Absalom, hanging on a tree, accursed, forsaken of heaven and earth; there let them read the Lord's abhorrence of rebellion against parents. Nothing can preserve men from misery and contempt, but heavenly wisdom and the grace of God.