1 Kings 6:19

He built twenty cubits of the back part of the house with boards of cedar from the floor to the ceiling. He built this within, for an inner sanctuary, even for the most holy place.

In front of the temple sanctuary was forty cubits long.

There was cedar on the house within, carved with buds and open flowers. All was cedar. No stone was visible.

Within the inner sanctuary was twenty cubits in length, and twenty cubits in width, and twenty cubits in its height. He overlaid it with pure gold. He covered the altar with cedar.

So Solomon overlaid the house within with pure gold. He drew chains of gold across before the inner sanctuary, and he overlaid it with gold.

He overlaid the whole house with gold, until all the house was finished. He also overlaid the whole altar that belonged to the inner sanctuary with gold.