'Beauty of Holiness' in the Bible

Give to the LORD the glory due to his name: bring an offering, and come before him: worship the LORD in the beauty of holiness.

And when he had consulted with the people, he appointed singers to 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.

Give to the LORD, the glory due to his name; worship the LORD in the beauty of holiness.

O worship the LORD in the beauty of holiness: fear before him, all the earth.