2 Chronicles 20:21

21 After he had advised the people, he appointed people to sing to the LORD and praise him for the beauty of his holiness. As they went in front of the troops, they sang, "Thank the LORD because his mercy endures forever!"

2 Chronicles 20:21 Meaning and Commentary

2 Chronicles 20:21

And when he had consulted with the people
His principal officers, in what order they should march, and in what manner they should form themselves, when they met the enemy, and how they should conduct as if they were to engage: he appointed singers unto the Lord;
to sing his praise, and give him glory, as if the victory was already completed, it being so sure: and that should praise the beauty of holiness, as they went out before
the army;
that is, praise God, who is glorious in holiness, whose beauty lies in his holiness, and who is holy in all his ways and works: and to say, praise the Lord, for his mercy endureth for ever;
with which they were to conclude their songs of praise, as David did, and whose songs they might sing; see ( Psalms 136:1-26 ) .

2 Chronicles 20:21 In-Context

19 The Levites, descendants of Kohath and Korah, stood up to praise the LORD God of Israel with very loud songs.

20 They got up early in the morning and went to the desert of Tekoa. As they were leaving, Jehoshaphat stopped and said, "Listen to me, people of Judah and those living in Jerusalem. Trust the LORD your God, and believe. Believe his prophets, and you will succeed."

21 After he had advised the people, he appointed people to sing to the LORD and praise him for the beauty of his holiness. As they went in front of the troops, they sang, "Thank the LORD because his mercy endures forever!"

22 As they started to sing praises, the LORD set ambushes against the Ammonites, Moabites, and the people of Mount Seir who had come into Judah. They were defeated.

23 Then the Ammonites and Moabites attacked the people from Mount Seir and annihilated them. After they had finished off the people of Seir, they helped destroy one another.