1 Kings 6:14-17

14And Solomon built the house and finished it.

15And he built the walls of the house within with boards of cedar, from the floor of the house to the walls of the roof; he overlaid [them] on the inside with wood, and overlaid the floor of the house with boards of cypress.

16And he built twenty cubits of the innermost part of the house, both floor and walls, with boards of cedar; and he built [them] for it within, to [be] the oracle, the most holy place.

17And the house, that is, the temple before it, was forty cubits [long].