II Samuel 13:32

32 But Jonadab son of Shimeah, David's brother, said, "My lord should not think that they killed all the princes; only Amnon is dead. This has been Absalom's express intention ever since the day Amnon raped his sister Tamar.

32 And Jonadab, the son of Shimeah, David's brother, answered and said, Let not my lord suppose that they have killed all the young men the king's sons; for Amnon only is dead; for by the appointment of Absalom this hath been determined from the day that he forced his sister Tamar.