2 Samuel 13:3-5

New Catholic Bible

³ However, Amnon had a friend whose name was Jonadab. He was the son of David’s brother Shimeah, and he was an extremely devious man. ⁴ He asked Amnon: “O son of the king, why do you appear to be so depressed morning after morning? Will you not tell me?” Amnon replied: “I am in love with Tamar, the sister of my brother Absalom.”

⁵ Then Jonadab said to him: “Lie down on your bed and pretend to be ill. When your father comes to visit you, say to him: ‘Please let my sister come and give me something to eat. Ask her to prepare the food in my presence for me to see and then eat it from her hand.’ ”