2 Samuel 13:26 (KJV)

And Absalom came to the king, and said, Behold now, thy servant hath sheepshearers; let the king, I beseech thee, and his servants go with thy servant.

And the king said to Absalom, Nay, my son, let us not all now go, lest we be chargeable unto thee. And he pressed him: howbeit he would not go, but blessed him.

Then said Absalom, If not, I pray thee, let my brother Amnon go with us. And the king said unto him, Why should he go with thee?

But Absalom pressed him, that he let Amnon and all the king’s sons go with him.

Now Absalom had commanded his servants, saying, Mark ye now when Amnon’s heart is merry with wine, and when I say unto you, Smite Amnon; then kill him, fear not: have not I commanded you? be courageous, and be valiant.