2 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
Chapter 13
4And he said to him, Why dost thou, the king's son, get thinner from morning to morning? Wilt thou not tell me? And Amnon said to him, I love Tamar, my brother Absalom's sister.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.