1 Kings 22:29-33

29So [Ahab] the king of Israel and Jehoshaphat the king of Judah went up to Ramoth-gilead.

30The king of Israel said to Jehoshaphat, “I will disguise myself and enter the battle, but you put on your [royal] clothing.” So the king of Israel disguised himself and went into the battle.

31Now the king of Aram (Syria) had commanded the thirty-two captains of his chariots, saying, “Do not fight with [anyone, either] small or great, but with [Ahab] the king of Israel alone.”

32When the captains of the chariots saw Jehoshaphat, they said, “Surely it is the king of Israel.” They turned to fight against him, and Jehoshaphat shouted out [in fear].

33When the captains of the chariots saw that it was not the king of Israel, they turned back from pursuing him.