2 Chronicles 5:13-14

Then it came to pass that when the trumpeters and singers joined as one to extol and praise ADONAI, and when the sound of the trumpets, cymbals and musical instruments and the praise of ADONAI—“For He is good, for His mercy endures forever”—grew louder, the Temple, the House of ADONAI, was filled with a cloud. The kohanim could not stand to minister because of the cloud, for the glory of ADONAI filled the House of God.