32 And Jonadab, the son of Shimeah, David's brother, said, Let not my lord have the idea that all the sons of the king have been put to death; for only Amnon is dead: this has been purposed by Absalom from the day when he took his sister Tamar by force. 33 So now, let not my lord the king take this thing to heart, with the idea that all the king's sons are dead: for only Amnon is dead.
Matthew Henry's Commentary on 2 Samuel 13:32-33
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.