2nd Kings 3:9

6 At that time, King Jehoram went out from Samaria and got all Israel together in fighting order.

7 And he sent to Jehoshaphat, king of Judah, saying, The king of Moab has got free from my authority: will you go with me to make war on Moab? And he said, I will go with you: I am as you are, my people as your people, and my horses as your horses.

8 And he said, Which way are we to go? And he said in answer, By the waste land of Edom.

9 So the king of Israel went with the king of Judah and the king of Edom by a roundabout way for seven days: and there was no water for the army or for the beasts they had with them.

10 And the king of Israel said, Here is trouble: for the Lord has got these three kings together to give them into the hands of Moab.

11 But Jehoshaphat said, Is there no prophet of the Lord here, through whom we may get directions from the Lord? And one of the king of Israel's men said in answer, Elisha, the son of Shaphat, is here, who was servant to Elijah.

12 And Jehoshaphat said, The word of the Lord is with him. So the king of Israel and Jehoshaphat and the king of Edom went down to him.