2 Chronicles 5:11-14

When the priests came forth from the holy place (for all the priests who were present had sanctified themselves, without regard to divisions), and all the Levitical singers, Asaph, Heman, Jeduthun, and their sons and kinsmen, clothed in fine linen, with cymbals, harps and lyres, standing east of the altar, and with them one hundred and twenty priests blowing trumpets in unison when the trumpeters and the singers were to make themselves heard with one voice to praise and to glorify the LORD, and when they lifted up their voice accompanied by trumpets and cymbals and instruments of music, and when they praised the LORD saying, “He indeed is good for His lovingkindness is everlasting,” then the house, the house of the LORD, was filled with a cloud, so that the priests could not stand to minister because of the cloud, for the glory of the LORD filled the house of God.