24 And Ab'salom came to the king, and said, "Behold, your servant has sheepshearers; pray let the king and his servants go with your servant." 25 But the king said to Ab'salom, "No, my son, let us not all go, lest we be burdensome to you." He pressed him, but he would not go but gave him his blessing. 26 Then Ab'salom said, "If not, pray let my brother Amnon go with us." And the king said to him, "Why should he go with you?" 27 But Ab'salom pressed him until he let Amnon and all the king's sons go with him. 28 Then Ab'salom commanded his servants, "Mark when Amnon's heart is merry with wine, and when I say to you, 'Strike Amnon,' then kill him. Fear not; have I not commanded you? Be courageous and be valiant." 29 So the servants of Ab'salom did to Amnon as Ab'salom had commanded. Then all the king's sons arose, and each mounted his mule and fled.
30 While they were on the way, tidings came to David, "Ab'salom has slain all the king's sons, and not one of them is left."
Matthew Henry's Commentary on 2 Samuel 13:24-30
Commentary on 2 Samuel 13:21-29
(Read 2 Samuel 13:21-29)
Observe the aggravations of Absalom's sin: he would have Ammon slain, when least fit to go out of the world. He engaged his servants in the guilt. Those servants are ill-taught who obey wicked masters, against God's commands. Indulged children always prove crosses to godly parents, whose foolish love leads them to neglect their duty to God.
Commentary on 2 Samuel 13:30-39
(Read 2 Samuel 13:30-39)
Jonadab was as guilty of Ammon's death, as of his sin; such false friends do they prove, who counsel us to do wickedly. Instead of loathing Absalom as a murderer, David, after a time, longed to go forth to him. This was David's infirmity: God saw something in his heart that made a difference, else we should have thought that he, as much as Eli, honoured his sons more than God.