¹⁷ Then he measured its wall, and it was one hundred and forty-four cubits in terms of human measurement (which was what the angel was using). ¹⁸ The material of which the wall is built is jasper, and the city itself is pure gold, like pure glass. ¹⁹ The foundations of the city wall are decorated with every kind of precious stone: the first foundation is jasper, the second sapphire, the third agate, the fourth emerald,