2Ki 2 Kings, chapter Second Book of Kings, chapter 3
On his way he sent a message to Jehoshaphat, king of Judah, saying, “The king of Moab has rebelled against me. Will you join me in an attack on Moab?”
Jehoshaphat replied, “Yes, I will join you. You and I are as one, my men and your men are as one, and my horses and your horses are as one.”1Ki 22:4