2 Chronicles 18:29-34

29 The king of Israel said to Jehoshaphat, "I will disguise myself and go into battle, but you wear your robes." So the king of Israel disguised himself, and they went into battle.
30 Now the king of Aram had commanded the captains of his chariots, "Fight with no one small or great, but only with the king of Israel."
31 When the captains of the chariots saw Jehoshaphat, they said, "It is the king of Israel." So they turned to fight against him; and Jehoshaphat cried out, and the Lord helped him. God drew them away from him,
32 for when the captains of the chariots saw that it was not the king of Israel, they turned back from pursuing him.
33 But a certain man drew his bow and unknowingly struck the king of Israel between the scale armor and the breastplate; so he said to the driver of his chariot, "Turn around, and carry me out of the battle, for I am wounded."
34 The battle grew hot that day, and the king of Israel propped himself up in his chariot facing the Arameans until evening; then at sunset he died.