2 Samuel 13:9
And she took a pan, and poured them out before him; but he refused to eat. And Amnon said, Have out all men from me. And they went out every man from him. And she took a pan, and poured them out before him; but he refused to eat. And Amnon said, Have out all men from me. And they went out every man from him.
This moment belongs to the account of the crime of Amnon the first-born against his sister Tamar and the events that followed it. That crime was a shameful, incestuous adultery, made doubly guilty by its unnatural character and punishable with death under the law. Amnon's wrongdoing was one of the fruits of David's own sins.
David permitted the deed to pass unpunished and unrebuked, for, self-condemned by his own sin, he failed to bring the offender to justice. Absalom avenged Tamar by having Amnon killed. As the natural protector of his foully wronged sister, Absalom concealed his purpose of revenge for two full years and then struck more surely by commanding that the drunken Amnon be slain at the feast of the king's sons.
That avenging killing repeatedly reminded David of the injustice he had done to Uriah and Bath-sheba. The crime and its vengeance together form the twofold judgment already meted out to David according to the fourfold restoration he had unwittingly sentenced upon himself on hearing Nathan's parable.