2 Chronicles 18:3

18:3 King Ahab of Israel said to Jehoshaphat, “Will you go with me to attack Ramoth Gilead?” Jehoshaphat replied to the king of Israel, “I will support you; my army is at your disposal and will support you in battle.”

2 Chronicles 18:29-32

18:29 The king of Israel said to Jehoshaphat, “I will disguise myself and then enter the battle; but you wear your royal attire.” So the king of Israel disguised himself and they entered the battle. 18:30 Now the king of Syria had ordered his chariot commanders, “Do not fight common soldiers or high ranking officers; fight only the king of Israel!” 18:31 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. The Lord helped him; God lured them away from him. 18:32 When the chariot commanders realized he was not the king of Israel, they turned away from him.