Verse 3. With their faces - Thus expressing their awful dread of the Divine Majesty, their chearful submission to the Divine authority, and the sense they had of their utter unworthiness to enter into his presence. Upon - The cloud first came down upon the house, and then entered into the house, and was seen both within it by the priests, and without it by the people.
Verse 6. David praised - For David composed the psalms or hymns, and appointed them to be sung by the Levites, and instrumental music to be joined to their voices.
Verse 16. This house - There will I make myself known, and there will I be called upon.