II Kings 3:5-10

But it happened, when Ahab died, that the king of Moab rebelled against the king of Israel. So King Jehoram went out of Samaria at that time and mustered all Israel. Then he went and sent to Jehoshaphat 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.” Then he said, “Which way shall we go up?” And he answered, “By way of the Wilderness of Edom.” So the king of Israel went with the king of Judah and the king of Edom, and they marched on that roundabout route seven days; and there was no water for the army, nor for the animals that followed them. And the king of Israel said, “Alas! For the LORD has called these three kings together to deliver them into the hand of Moab.”