2 Samuel 13:1

Now Absalom , David’s son , had a beautiful sister , whose name was Tamar . And after a time Amnon , David’s son , loved her.

In the course of time, Amnon son of David fell in love with Tamar, the beautiful sister of Absalom son of David.

And it came to pass after this, that Absalom the son of David had a fair sister, whose name was Tamar; and Amnon the son of David loved her.