The king of Israel said to Jehoshaphat, "I will enter the battle in disguise,1 but you wear your royal robes." So the king of Israel disguised himself and went into battle.
References for 1 Kings 22:30
Now the king of Aram2 had ordered his thirty-two chariot commanders, "Do not fight with anyone, small or great, except the king3 of Israel."
References for 1 Kings 22:31
When the chariot commanders saw Jehoshaphat, they thought, "Surely this is the king of Israel." So they turned to attack him, but when Jehoshaphat cried out,
the chariot commanders saw that he was not the king of Israel and stopped pursuing him.
But someone drew his bow4 at random and hit the king of Israel between the sections of his armor. The king told his chariot driver, "Wheel around and get me out of the fighting. I've been wounded."
References for 1 Kings 22:34
All day long the battle raged, and the king was propped up in his chariot facing the Arameans. The blood from his wound ran onto the floor of the chariot, and that evening he died.
As the sun was setting, a cry spread through the army: "Every man to his town; everyone to his land!"5
References for 1 Kings 22:36