Commentaries
13:1-20 From henceforward David was followed with one trouble after another. Adultery and murder were David's sins, the like sins among his children were the beginnings of his punishment: he was too indulgent to his children. Thus David might trace the sins of his children to his own misconduct, which must have made the anguish of the chastisement worse. Let no one ever expect good treatment from those who are capable of attempting their seduction; but it is better to suffer the greatest wrong than to commit the least sin.
15. Then Amnon hated her exceedingly—It is not unusual for persons instigated by violent and irregular passions to go from one extreme to another. In Amnon's case the sudden revulsion is easily accounted for; the atrocity of his conduct, with all the feelings of shame, remorse, and dread of exposure and punishment, now burst upon his mind, rendering the presence of Tamar intolerably painful to him.