NET

21 He met with the people and appointed musicians to play before the Lord and praise his majestic splendor. As they marched ahead of the warriors they said: “Give thanks to the Lord, for his loyal love endures.”

Darby

21 And he consulted with the people, and appointed singers to Jehovah, and those that should praise in holy splendour, as they went forth before the armed men, and say, Give thanks to Jehovah; for his loving-kindness [endureth] for ever!

KJV

21 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.