2 Samuel 13:28

13:28 Absalom commanded his servants, saying, Mark you now, when Amnon's heart is merry with wine; and when I tell you, Smite Amnon, then kill him; don't be afraid; haven't I commanded you? be courageous, and be valiant.
-World English Bible

Other Translation

13:28 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.
-King James Version