2 Samuel 13:2
Context13:2 But Amnon became frustrated because he was so lovesick 1 over his sister Tamar. For she was a virgin, and to Amnon it seemed out of the question to do anything to her.
2 Samuel 13:4
Context13:4 He asked Amnon, 2 “Why are you, the king’s son, 3 so depressed every morning? Can’t you tell me?” So Amnon said to him, “I’m in love with Tamar the sister of my brother Absalom.”
2 Samuel 17:25
Context17:25 Absalom had made Amasa general in command of the army in place of Joab. (Now Amasa was the son of an Israelite man named Jether, who had married 4 Abigail the daughter of Nahash and sister of Zeruiah, Joab’s mother.)

