23 And it came to pass after two full years, that Absalom had sheep-shearers in Baal-hazor, which is beside Ephraim: and Absalom invited all the king's sons. 24 And Absalom came to the king, and said, Behold now, thy servant hath sheep-shearers; let the king, I pray thee, and his servants go with thy servant. 25 And the king said to Absalom, Nay, my son, let us not all go, lest we be burdensome unto thee. And he pressed him: howbeit he would not go, but blessed him. 26 Then said Absalom, If not, I pray thee, let my brother Amnon go with us. And the king said unto him, Why should he go with thee? 27 But Absalom pressed him, and he let Amnon and all the king's sons go with him. 28 And Absalom commanded his servants, saying, Mark ye now, when Amnon's heart is merry with wine; and when I say unto you, Smite Amnon, then kill him; fear not; have not I commanded you? be courageous, and be valiant.
Matthew Henry's Commentary on 2 Samuel 13:23-28
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.