This expression is repeated in v. 14 and a similar statement is made in v. 38. Verse 9 undoubtedly refers to the main part of the structure, the Temple itself, exclusive of the outside chamber, and the finishing spoken of is the completion of the shell with the roof. The internal fittings were added afterward (vs. 15-22).
Covered the house.
That is, roofed it. Boards of cedar were placed upon beams of cedar. We are not told whether it was a flat or a sloping roof. Most commentators are of the opinion that it could only have been a flat roof such as is usual in the ancient Orient, but there are some who hold that it must have been a gable roof.