Albert Barnes Commentary 2 Chronicles 5:13

"it came to pass, when the trumpeters and singers were as one, to make one sound to be heard in praising and thanking Jehovah; and when they lifted up their voice with the trumpets and cymbals and instruments of music, and praised Jehovah, [saying], For he is good; for his lovingkindness [endureth] for ever; that then the house was filled with a cloud, even the house of Jehovah," — 2 Chronicles 5:13 (ASV)

Even the house of the Lord - Or, according to another reading from the Septuagint, which removes the superfluousness of these words, The house was filled with a cloud of the glory of the Lord.