Revelation Chap12:
We have before explained that what is most frequently meant by the Holy City, the Jerusalem of God, which is mentioned in the Holy Book, is the Law of God. It is compared sometimes to a bride, and sometimes to Jerusalem, and again to the new heaven and earth. So in chapter 21, verses 1, 2 and 3 of the Revelation of St. John, it is said: "And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea. And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband. And I heard a great voice out of heaven saying, Behold, the tabernacle of God is with men, and He will dwell with them, and they shall be His people and God Himself shall be with them, and be their God." (67:1)

End of Quote