2 Samuel 13:17
Then he called his servant that ministered unto him, and said, Put now this woman out from me, and bolt the door after her. Then he called his servant that ministered unto him, and said, Put now this woman out from me, and bolt the door after her.
Amnon foully wronged his sister Tamar and then had her put out from him and shut away, calling the servant that ministered to him and ordering him to expel this woman and bolt the door after her. The deed was a shameful, incestuous crime that left Amnon doubly guilty, for the law pronounced death upon the adulterer and his unnatural act added to his guilt. David, though Amnon was his first-born, failed to bring the offender to justice, permitting the crime to pass unpunished and unrebuked because he was self-condemned by his own sin.
That unjudged crime led directly to Absalom's revenge and to Amnon being killed. Absalom, as his sister's natural protector, concealed his purpose of revenge for two full years and then struck more surely, having the drunken, incestuous Amnon slain by his command at a feast of the king's sons. The death of Amnon was a twofold judgment meted out to David, part of the fourfold loss of sons that resulted from the father's sin.