2 Kings 3:5-7

3:5 When Ahab died, the king of Moab rebelled against the king of Israel. 3:6 At that time King Jehoram left Samaria and assembled all Israel for war. 3:7 He sent this message to King Jehoshaphat of Judah: “The king of Moab has rebelled against me. Will you fight with me against Moab?” Jehoshaphat replied, “I will join you in the campaign; my army and horses are at your disposal.”