1 Kings 6:13 (KJV)

The door for the middle chamber was in the right side of the house: and they went up with winding stairs into the middle chamber, and out of the middle into the third.

So he built the house, and finished it; and covered the house with beams and boards of cedar.

And then he built chambers against all the house, five cubits high: and they rested on the house with timber of cedar.

And the word of the LORD came to Solomon, saying,

Concerning this house which thou art in building, if thou wilt walk in my statutes, and execute my judgments, and keep all my commandments to walk in them; then will I perform my word with thee, which I spake unto David thy father:

So Solomon built the house, and finished it.

And he built the walls of the house within with boards of cedar, both the floor of the house, and the walls of the ceiling: and he covered them on the inside with wood, and covered the floor of the house with planks of fir.

And he built twenty cubits on the sides of the house, both the floor and the walls with boards of cedar: he even built them for it within, even for the oracle, even for the most holy place.

And the house, that is, the temple before it, was forty cubits long.

And the cedar of the house within was carved with knops and open flowers: all was cedar; there was no stone seen.