The inner sanctuary was twenty cubits long, twenty cubits wide, and twenty cubits high. He overlaid it with pure gold, and overlaid the altar of cedar.
1 Kings 6:20
Surrounding context
6:19 And he prepared the inner sanctuary inside the temple, to set the ark of the covenant of the LORD there.
6:20 The inner sanctuary was twenty cubits long, twenty cubits wide, and twenty cubits high. He overlaid it with pure gold, and overlaid the altar of cedar.
6:21 So Solomon overlaid the inside of the temple with pure gold. He stretched gold chains across the front of the inner sanctuary, and overlaid it with gold.