21 But when King David had news of all these things he was very angry; but he did not make trouble for Amnon his son, for he was dear to David, being his oldest son. 22 But Absalom said nothing to his brother Amnon, good or bad: for he was full of hate for him, because he had taken his sister Tamar by force.
Matthew Henry's Commentary on 2 Samuel 13:21-22
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.