1 Kings 22:29-33
22:29 The king of Israel and King Jehoshaphat of Judah attacked Ramoth Gilead.
22:30 The king of Israel said to Jehoshaphat, “I will disguise myself and then enter into the battle; but you wear your royal robes.” So the king of Israel disguised himself and then entered into the battle.
22:31 Now the king of Syria had ordered his thirty-two chariot commanders, “Do not fight common soldiers or high-ranking officers; fight only the king of Israel.”
22:32 When the chariot commanders saw Jehoshaphat, they said, “He must be the king of Israel.” So they turned and attacked him, but Jehoshaphat cried out.
22:33 When the chariot commanders realized he was not the king of Israel, they turned away from him.