32 And Jonadab son of Shimeah, David's brother, answereth and saith, 'Let not my lord say, The whole of the young men, the sons of the king, they have put to death; for Amnon alone 'is' dead, for by the command of Absalom it hath been appointed from the day of his humbling Tamar his sister;
Matthew Henry's Commentary on 2 Samuel 13:32
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.