1 Kings 22:29-32

29So the king of Israel and Jehoshaphat the king of Judah went up to Ramoth-gilead. 30And the king of Israel said unto Jehoshaphat, I will disguise myself, and go into the battle; but put thou on thy robes. And the king of Israel disguised himself, and went into the battle. 31Now the king of Syria had commanded the thirty and two captains of his chariots, saying, Fight neither with small nor great, save only with the king of Israel. 32And it came to pass, when the captains of the chariots saw Jehoshaphat, that they said, Surely it is the king of Israel; and they turned aside to fight against him: and Jehoshaphat cried out.