14 Joab said, "I can't waste my time with you." He then grabbed three knives and stabbed Absalom in the heart while he was still alive in the tree; 15 by then Absalom was surrounded by ten of Joab's armor bearers; they hacked away at him and killed him. 16 Joab then blew the ram's horn trumpet, calling off the army in its pursuit of Israel. 17 They took Absalom, dumped him into a huge pit in the forest, and piled an immense mound of rocks over him. Meanwhile the whole army of Israel was in flight, each man making his own way home. 18 While alive, Absalom had erected for himself a pillar in the Valley of the King, "because," he said, "I have no son to carry on my name." He inscribed the pillar with his own name. To this day it is called "The Absalom Memorial."
19 Ahimaaz, Zadok's son, said, "Let me run to the king and bring him the good news that God has delivered him from his enemies." 20 But Joab said, "You're not the one to deliver the good news today; some other day, maybe, but it's not 'good news' today." (This was because the king's son was dead.) 21 Then Joab ordered a Cushite, "You go. Tell the king what you've seen." "Yes sir," said the Cushite, and ran off. 22 Ahimaaz son of Zadok kept at it, begging Joab, "What does it matter? Let me run too, following the Cushite." Joab said, "Why all this 'Run, run'? You'll get no thanks for it, I can tell you." 23 "I don't care; let me run." "Okay," said Joab, "run." So Ahimaaz ran, taking the lower valley road, and passed the Cushite. 24 David was sitting between the two gates. The sentry had gone up to the top of the gate on the wall and looked around. He saw a solitary runner. 25 The sentry called down and told the king. The king said, "If he's alone, it must be good news!" 26 the sentry saw another runner and called down to the gate, "Another runner all by himself." And the king said, "This also must be good news." 27 Then the sentry said, "I can see the first man now; he runs like Ahimaaz son of Zadok." "He's a good man," said the king. "He's bringing good news for sure." 28 Then Ahimaaz called out and said to the king, "Peace!" Then he bowed deeply before the king, his face to the ground. "Blessed be your God; he has handed over the men who rebelled against my master the king." 29 The king asked, "But is the young man Absalom all right?" Ahimaaz said, "I saw a huge ruckus just as Joab was sending me off, but I don't know what it was about." 30 The king said, "Step aside and stand over there." So he stepped aside. 31 Then the Cushite arrived and said, "Good news, my master and king! God has given victory today over all those who rebelled against you!" 32 "But," said the king, "is the young man Absalom all right?" And the Cushite replied, "Would that all of the enemies of my master the king and all who maliciously rose against you end up like that young man."
Matthew Henry's Commentary on 2 Samuel 18:14-32
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.
Commentary on 2 Samuel 18:19-33
(Read 2 Samuel 18:19-33)
By directing David to give God thanks for his victory, Ahimaaz prepared him for the news of his son's death. The more our hearts are fixed and enlarged, in thanksgiving to God for our mercies, the better disposed we shall be to bear with patience the afflictions mixed with them. Some think David's wish arose from concern about Absalom's everlasting state; but he rather seems to have spoken without due thought. He is to be blamed for showing so great fondness for a graceless son. Also for quarrelling with Divine justice. And for opposing the justice of the nation, which, as king, he had to administer, and which ought to be preferred before natural affection. The best men are not always in a good frame; we are apt to over-grieve for what we over-loved. But while we learn from this example to watch and pray against sinful indulgence, or neglect of our children, may we not, in David, perceive a shadow of the Saviour's love, who wept over, prayed for, and even suffered death for mankind, though vile rebels and enemies.