2 Chronicles 20:19-21

ISV(i) 19 Descendants of Levi from the descendants of Kohath and from the descendants of Korah stood up to praise the LORD God of Israel in a very loud voice that ascended to heaven.
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!”