1 Kings 6:20-22

20The inner sanctuary was twenty cubits long, twenty wide and twenty high. He overlaid the inside with pure gold, and he also overlaid the altar of cedar. 21Solomon covered the inside of the temple with pure gold, and he extended gold chains across the front of the inner sanctuary, which was overlaid with gold. 22So he overlaid the whole interior with gold. He also overlaid with gold the altar that belonged to the inner sanctuary.