II Samuel 13:2

2 Amnon became so obsessed with his sister Tamar that he made himself ill. She was a virgin, and it seemed impossible for him to do anything to her.

2 E angustiou-se Amnom, até adoecer, por Tamar, sua irmã, porque era virgem: e parecia aos olhos de Amnom dificultoso fazer-lhe cousa alguma.