2 Kings 3:1-7

Now Jehoram the son of Ahab became king over Israel at Samaria in the eighteenth year of Jehoshaphat king of Judah, and reigned twelve years. He did evil in the sight of the LORD, though not like his father and his mother; for he put away the sacred pillar of Baal which his father had made. Nevertheless, he clung to the sins of Jeroboam the son of Nebat, which he made Israel sin; he did not depart from them. Now Mesha king of Moab was a sheep breeder, and used to pay the king of Israel 100,000 lambs and the wool of 100,000 rams. But when Ahab died, the king of Moab rebelled against the king of Israel. And King Jehoram went out of Samaria at that time and mustered all Israel. Then he went and sent word to Jehoshaphat the king of Judah, saying, “The king of Moab has rebelled against me. Will you go with me to fight against Moab?” And he said, “I will go up; I am as you are, my people as your people, my horses as your horses.”