2 Samuel 13:1, 14, 28-29

Now David’s son Absalom had a beautiful sister named Tamar. And Amnon, her half brother, fell desperately in love with her.

But Amnon wouldn’t listen to her, and since he was stronger than she was, he raped her.

Absalom told his men, “Wait until Amnon gets drunk; then at my signal, kill him! Don’t be afraid. I’m the one who has given the command. Take courage and do it!” So at Absalom’s signal they murdered Amnon. Then the other sons of the king jumped on their mules and fled.