2 Amnon became so obsessed with his sister Tamar that he made himself ill. She was a virgin, and it seemed impossible for him to do anything to her.
2 And Amnon was so vexed, that he fell sick for his sister Tamar; for she was a virgin; and Amnon thought
2 And Amnon was so tormented that he made himself ill because of his sister Tamar, for she was a virgin, and it seemed impossible to Amnon to do anything to her.
2 Amnon was obsessed with his sister Tamar to the point of making himself sick over her. She was a virgin, so he couldn't see how he could get his hands on her.
2 Amnon was so distressed over his sister Tamar that he became sick; for she was a virgin. And it was improper for Amnon to do anything to her.
2 Amnon became so obsessed with Tamar that he became ill. She was a virgin, and Amnon thought he could never have her.
Matthew Henry's Commentary on 2 Samuel 13:2
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.