21 King David heard the whole story and was enraged, 22 but he didn't discipline Amnon. David doted on him because he was his firstborn. Absalom quit speaking to Amnon - not a word, whether good or bad - because he hated him for violating his sister Tamar. 23 Two years went by. One day Absalom threw a sheep-shearing party in Baal Hazor in the vicinity of Ephraim and invited all the king's sons. 24 He also went to the king and invited him. "Look, I'm throwing a sheep-shearing party. Come, and bring your servants." 25 But the king said, "No, son - not this time, and not the whole household. We'd just be a burden to you." Absalom pushed, but David wouldn't budge. But he did give him his blessing. 26 Then Absalom said, "Well, if you won't come, at least let my brother Amnon come." 27 But Absalom was so insistent that he gave in and let Amnon and all the rest of the king's sons go. 28 Absalom prepared a banquet fit for a king. Then he instructed his servants, "Look sharp, now. When Amnon is well into the sauce and feeling no pain, and I give the order 'Strike Amnon,' kill him. And don't be afraid - I'm the one giving the command. Courage! You can do it!" 29 Absalom's servants did to Amnon exactly what their master ordered. All the king's sons got out as fast as they could, jumped on their mules, and rode off.
Matthew Henry's Commentary on 2 Samuel 13:21-29
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.