(5) Make thyself sick.--Rather, Feign thyself sick. It has already been mentioned in 2Samuel 13:2 that Amnon "fell sick." That was the real pining of ungoverned and ungratified passion; this was a crafty feigning of sickness. Yet the miserable condition to which Amnon was brought by the former would give colour and plausibility to the latter.

Verse 5. - When thy father cometh to see thee. While the daughters lived in Oriental seclusion in the dwellings of their mothers, the sons seem to have had separate apartments assigned them in the palace. And David evidently was an affectionate father, who even went to the abodes of his sons in a loving and unceremonious way, to see how they fared. But Jonadab abused the king's affection, and made it the very means of removing the obstacles in the way of his daughter's disgrace. And like the whole tribe of flatterers and time servers, he employed his cleverness to gratify his patron's momentary passion, indifferent to the miserable consequences which must inevitably follow. For the least punishment which Amnon would have to bear would be exclusion from the succession to the crown, besides disgrace and his father's anger. Absalom, who was three or four years younger than Ashen, he despised, and counted for nothing.

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.And Jonadab said unto him,.... Being a subtle man, he presently formed a scheme to relieve him, and open a way for the enjoyment of what he desired:

lay thee down on thy bed, and make thyself sick; feign thyself sick, pretend that thou art so, by lying down on the bed, and making complaints of one kind or another:

and when thy father cometh to see thee; as he quickly would, after hearing of his illness, being very affectionate to his children:

say unto him, I pray thee let, my sister Tamar come, and give me meat; here he is directed to call her not Absalom's sister, but his own, the more to cover his ill design upon her:

and dress the meat in my sight, that I may see it, and eat it at her hand; pretending that his stomach was very weak and squeamish, that he could not eat anything which his servants dressed for him, and which he did not see done with his own eyes.