2nd Samuel 13:6

3 But Amnon had a friend whose name was Jonadab, the son of Shimeah, David's brother: and Jonadab was a very wise man.

4 And he said to him, O son of the king, why are you getting thinner day by day? will you not say what your trouble is? And Amnon said to him, I am in love with Tamar, my brother Absalom's sister.

5 Then Jonadab said to him, Go to your bed, and let it seem that you are ill: and when your father comes to see you, say to him, Let my sister Tamar come and give me bread, and get the food ready before my eyes, so that I may see it and take it from her hand.

6 So Amnon went to bed and made himself seem ill: and when the king came to see him, Amnon said to the king, Please let my sister Tamar come and make me one or two cakes before my eyes, so that I may take food from her hand.

7 Then David sent to the house for Tamar and said, Go now to your brother Amnon's house and get a meal for him.

8 So Tamar went to her brother Amnon's house; and he was in bed. And she took paste and made cakes before his eyes, cooking them over the fire.

9 And she took the cooking-pot, and put the cakes before him, but he would not take them. And Amnon said, Let everyone go away from me. So they all went out.