21 After consulting the people, Jehoshaphat appointed men to sing to the LORD and to praise him for the splendor of hisa holiness as they went out at the head of the army, saying: “Give thanks to the LORD, for his love endures forever.”

Read 2 Chronicles 20:21 Using Other Translations

And when he had consulted with the people, he appointed singers unto the LORD, and that should praise the beauty of holiness, as they went out before the army, and to say, Praise the LORD; for his mercy endureth for ever.
And when he had taken counsel with the people, he appointed those who were to sing to the LORD and praise him in holy attire, as they went before the army, and say, "Give thanks to the LORD, for his steadfast love endures forever."
After 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!”