2 Samuel 13:3-5

Living Bible

³ But Amnon had a very crafty friend—his cousin Jonadab (the son of David’s brother Shimeah).

⁴ One day Jonadab said to Amnon, “What’s the trouble? Why should the son of a king look so haggard morning after morning?”

So Amnon told him, “I am in love with Tamar, my half sister.”

⁵ “Well,” Jonadab said, “I’ll tell you what to do. Go back to bed and pretend you are sick; when your father comes to see you, ask him to let Tamar come and prepare some food for you. Tell him you’ll feel better if she feeds you.”