2 Samuel 13:10
And Amnon said unto Tamar, Bring the meat into the chamber, that I may eat of thine hand. And Tamar took the cakes which she had made, and brought them into the chamber to Amnon her brother. And Amnon said unto Tamar, Bring the meat into the chamber, that I may eat of thine hand. And Tamar took the cakes which she had made, and brought them into the chamber to Amnon her brother.
This request for the food to be brought into the private chamber was the step by which Amnon isolated Tamar to commit a disgraceful, unnatural act of incest with her. That act made him doubly guilty, since the law pronounced death upon the adulterer. The offender was the first-born son.
The great crime begun here was one of the fruits of David's own wrongdoing. Because David was self-condemned by his own sin, he permitted the crime to pass unpunished and unrebuked and failed to bring the offender to justice. Absalom, as the natural protector of his sister so foully wronged, concealed his purpose of revenge for two full years. He then acted decisively, having the drunken Amnon slain by his command at a feast of the king's sons in vengeance for that crime. The death of Amnon was part of the twofold judgment meted out to David according to his own sentence.