'Cloud' in the Bible

the trumpeters and musicians played in union, praising and giving thanks to the LORD. They praised the LORD loudly and sang, "He is good, and his gracious love is eternal," accompanied by the trumpets, cymbals, and other musical instruments.) As they did this, a cloud filled the Temple, that is, the LORD's Temple,

and the priests were unable to complete their duties because of the cloud, since the glory of the LORD had filled God's Temple.