1 Kings 6:20

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.

And the oracle in the forepart was twenty cubits in length, and twenty cubits in breadth, and twenty cubits in the height thereof: and he overlaid it with pure gold; and so covered the altar which was of cedar.