2 Samuel 13:28-32

Then Absalom commanded his servants, saying, “See now, when Amnon’s heart is cheerful with wine, and I say to you, ‘Strike Amnon,’ then put him to death. Do not fear; have I not commanded you myself? Be courageous and be valiant.”

And the servants of Absalom did to Amnon just as Absalom had commanded. Then all the king’s sons got up and each mounted his mule and fled.

Now it was while they were on the way that the report came to David, saying, “Absalom has struck and killed all the king’s sons, and not one of them is left.”

Then the king stood up, tore his clothes, and lay on the ground; and all his servants were standing by with clothes torn.

And Jonadab, the son of Shimeah, David’s brother, responded, “Let my lord not assume that they have put to death all the young men, the king’s sons, for only Amnon is dead; because this has been set up by the intent of Absalom since the day that he violated his sister Tamar.