2 Chronicles 20
19 Ref The Levites, of the children of the Kohathites and of the children of the Korahites, stood up to praise Yahweh, the God of Israel, with an exceeding loud voice.
20 Ref They rose early in the morning, and went forth into the wilderness of Tekoa: and as they went forth, Jehoshaphat stood and said, Hear me, Judah, and you inhabitants of Jerusalem: believe in Yahweh your God, so shall you be established; believe his prophets, so shall you prosper.
21 Ref When he had taken counsel with the people, he appointed those who should sing to Yahweh, and give praise in holy array, as they went out before the army, and say, Give thanks to Yahweh; for his loving kindness endures forever.