2 Chronicles 20:20-24

ISV(i) 20 Jehoshaphat’s Instructions the Next MorningThe army got up early the next morning and headed out into the wilderness of Tekoa. Jehoshaphat stood up and addressed them. “Listen to me, you inhabitants of Judah and Jerusalem,” he said. “Have faith in the LORD your God and you’ll be established! Have faith in his prophets and you’ll succeed!” 21 After he had consulted with the people, Jehoshaphat appointed some choir members to sing to the LORD and to praise him in sacred splendor as they marched out in front of the armed forces. They kept saying “Give thanks to the LORD, because his gracious love is eternal!”
22 Right on time, as they began to sing and praise, the LORD ambushed the Ammonites, Moabites, and the inhabitants of Mount Seir who had attacked Judah, and they were defeated. 23 The Ammonites and Moabites attacked the inhabitants of Mount Seir, destroying them, and after they had finished with the inhabitants of Mount Seir, they worked on destroying one another!
24 When the army of Judah arrived at the remotest watchtower in the wilderness, they looked around at the invasion force, and to their surprise, there were dead bodies lying all around on the ground—not one had escaped!