"And he measured the city with the reed, twelve thousand furlongs. The length, and the breadth, and the height of it are equal" (\reference{Revelation 21:16}{Revelation 21:16}). Twelve thousand furlongs, 7,920,000 feet which being cubed, 496,793,088,000,000,000,000 cubic feet. Half of this we will reserve for the throne of God and the court of heaven, and half of the balance for streets, leaving a remainder of 124,198,272,000,000,000,000 cubic feet. Divide this by 4,096, the cubical feet in a room sixteen feet square, and there will be 30,321,843,750,000,000 rooms. We will now suppose that the world always did and always will contain 990,000,000,000,000 inhabitants, an that a generation lasts for 331/3 years, making in all 2,970,000,000 every century, and that the world will stand 100,000 years or 1,000 centuries, making in all 2,910,000,000,000 inhabitants. Then suppose there were one hundred worlds equal to this in number of inhabitants and duration of years, making a total of 297,000,000,000,000 persons, and there would be more than a hundred rooms sixteen feet square for each person.