Unknown Author
2 Samuel 13:1ESV·author unknown

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

Matthew Henry Presbyterian @wholebiblehenry

We have here a particular account of the abominable wickedness of Amnon in ravishing his sister, a subject not fit to be enlarged upon nor indeed to be mentioned without blushing, that ever any man should be so vile, especially that a son of David should be so.

Commenting on 2 Samuel 13:1-20

John Gill Reformed Baptist @doctorgill

And it came to pass after this,.... After the sin of David with Bathsheba, his repentance for it, and pardon of it, and the birth of Solomon as a token of reconciliation; yet after all this the divine threatenings must take place; they had begun already in the death of the child begotten in adultery, and others here follow: that Absalom the son of David...

Geneva Bible Notes Reformed @genevanotes

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. (a) Tamar was Absalom's sister both by father and mother, and Amnon's only by father.