37 And David mourned many days for his son Amnon. Absalom fled to his grandfather, Talmai son of Ammihud, the king of Geshur. 38 He stayed there in Geshur for three years. 39 And King David, now reconciled to Amnon's death, longed to be reunited with his son Absalom.
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.