37 So Absalom went in flight and came to Talmai, the son of Ammihud, the king of Geshur, where he was for three years. 38 And the king was sorrowing for his son all the time. 39 And the heart of David was wasted with desire for Absalom: for he was comforted for the death of Amnon.
Matthew Henry's Commentary on 2 Samuel 13:37-39
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.