2 Chronicles 20:10-22

10“And now see what the armies of Ammon, Moab, and Mount Seir are doing. You would not let our ancestors invade those nations when Israel left Egypt, so they went around them and did not destroy them.

11Now see how they reward us! For they have come to throw us out of your land, which you gave us as an inheritance.

12O our God, won’t you stop them? We are powerless against this mighty army that is about to attack us. We do not know what to do, but we are looking to you for help.”

13As all the men of Judah stood before the Lord with their little ones, wives, and children,

14the Spirit of the Lord came upon one of the men standing there. His name was Jahaziel son of Zechariah, son of Benaiah, son of Jeiel, son of Mattaniah, a Levite who was a descendant of Asaph.

15He said, “Listen, all you people of Judah and Jerusalem! Listen, King Jehoshaphat! This is what the Lord says: Do not be afraid! Don’t be discouraged by this mighty army, for the battle is not yours, but God’s.

16Tomorrow, march out against them. You will find them coming up through the ascent of Ziz at the end of the valley that opens into the wilderness of Jeruel.

17But you will not even need to fight. Take your positions; then stand still and watch the Lord’s victory. He is with you, O people of Judah and Jerusalem. Do not be afraid or discouraged. Go out against them tomorrow, for the Lord is with you!”

18Then King Jehoshaphat bowed low with his face to the ground. And all the people of Judah and Jerusalem did the same, worshiping the Lord.

19Then the Levites from the clans of Kohath and Korah stood to praise the Lord, the God of Israel, with a very loud shout.

20Early the next morning the army of Judah went out into the wilderness of Tekoa. On the way Jehoshaphat stopped and said, “Listen to me, all you people of Judah and Jerusalem! Believe in the Lord your God, and you will be able to stand firm. Believe in his prophets, and you will succeed.”

21After consulting the people, the king appointed singers to walk ahead of the army, singing to the Lord and praising him for his holy splendor. This is what they sang: “Give thanks to the Lord; his faithful love endures forever!”

22At the very moment they began to sing and give praise, the Lord caused the armies of Ammon, Moab, and Mount Seir to start fighting among themselves.