2 Chronicles 20:21

With the people, i.e. with the elders or chief of the people; partly to take their advice about the expediency of the thing; and partly that they might excite and prepare themselves, and the people under them, to this great work of praising God. He appointed singers unto the Lord; to the honour and service of God. The beauty of holiness, or, the glory, or magnificence, or majesty of holiness, i.e. (by a vulgar Hebraism,) the Holy Majesty; a periphrasis of God. Or, according to the beauty or magnificence of the sanctuary, i.e. in the same comely order and magnificent manner as they used to do it in the temple; where the following song was usually sung, as 2 Chronicles 5:13, 2 Chronicles 7:3,6.