2 Samuel 13:1-2

Young's Literal Translation

13 And it cometh to pass afterwards that Absalom son of David hath a fair sister, and her name [is] Tamar, and Amnon son of David loveth her.

² And Amnon hath distress -- even to become sick, because of Tamar his sister, for she [is] a virgin, and it is hard in the eyes of Amnon to do anything to her.