5 Then Jonadab said to him, Go to your bed, and let it seem that you are ill: and when your father comes to see you, say to him, Let my sister Tamar come and give me bread, and get the food ready before my eyes, so that I may see it and take it from her hand.
Matthew Henry's Commentary on 2 Samuel 13:5
Commentary on 2 Samuel 13:1-20
(Read 2 Samuel 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.