1 Kings 6:16

And he built, against the wall of the house, stories encompassing the walls of the house around both the nave and the inner sanctuary; thus he made side chambers all around.

And he made the hall of the throne where he was to judge, the hall of judgment, and it was paneled with cedar from floor to floor.

And he made the room of the Holy of Holies: its length across the width of the house was twenty cubits, and its width was twenty cubits; and he covered it with fine gold, amounting to 600 talents.

And He built His sanctuary like the heights, Like the earth which He has founded forever.

He measured its length, twenty cubits, and the width, twenty cubits, before the nave; and he said to me, “This is the Holy of Holies.”