1 Kings 6:16-18

16Then he built the twenty-cubit room at the rear of the temple, from floor to ceiling, with cedar boards; he built it inside as the inner sanctuary, as the Most Holy Place.

17And in front of it the temple sanctuary was forty cubits long.

18The inside of the temple was cedar, carved with ornamental buds and open flowers. All was cedar; there was no stone to be seen.