Amnon had a friend named Jonadab, a son of David’s brother Shimeah. Jonadab was a very shrewd man,

Jonadab said to him, “Lie down on your bed and pretend you’re sick. When your father comes to see you, say to him, ‘Please let my sister Tamar come and give me something to eat. Let her prepare food in my presence so I can watch and eat from her hand.’”

But Jonadab, son of David’s brother Shimeah, spoke up: “My lord must not think they have killed all the young men, the king’s sons, because only Amnon is dead. In fact, Absalom has planned this ever since the day Amnon disgraced his sister Tamar.

Jonadab said to the king, “Look, the king’s sons have come! It’s exactly like your servant said.”