2 Chronicles 18:1-3, 28-32

But even though Jehoshaphat was very rich and much honored, he made a marriage alliance with Ahab of Israel. Some time later he paid a visit to Ahab at Samaria. Ahab celebrated his visit with a feast—a huge barbecue with all the lamb and beef you could eat. But Ahab had a hidden agenda; he wanted Jehoshaphat’s support in attacking Ramoth Gilead. Then Ahab brought it into the open: “Will you join me in attacking Ramoth Gilead?” Jehoshaphat said, “You bet. I’m with you all the way; you can count on me and my troops.”

So the king of Israel and Jehoshaphat king of Judah went ahead and attacked Ramoth Gilead. The king of Israel said to Jehoshaphat, “Wear my kingly robe; I’m going into battle disguised.” So the king of Israel entered the battle in disguise. Meanwhile, the king of Aram had ordered his chariot commanders (there were thirty-two of them), “Don’t bother with anyone whether small or great; go after the king of Israel and him only.” When the chariot commanders saw Jehoshaphat, they said, “There he is! The king of Israel!” and took after him. Jehoshaphat yelled out, and the chariot commanders realized they had the wrong man—it wasn’t the king of Israel after all. God intervened and they let him go.