14 Then Joab said , "I will not waste time here with you." So he took three spears in his hand and thrust them through the heart of Absalom while he was yet alive in the midst of the oak . 15 And ten young men who carried Joab's armor gathered around and struck Absalom and killed him.
Matthew Henry's Commentary on 2 Samuel 18:14-15
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.