It doesn't say this anywhere in the Bible.
We discover in Revelation 21 that the Holy City, "New Jerusalem", is prepared as a bride. The Lamb's bride and wife is called "New Jerusalem."
9 And there came unto me one of the seven angels which had the seven vials full of the seven last plagues, and talked with me, saying, Come hither, I will shew thee the bride, the Lamb's wife. 10 And he carried me away in the spirit to a great and high mountain, and shewed me that great city, the holy Jerusalem, descending out of heaven from God, 11 Having the glory of God: and her light was like unto a stone most precious, even like a jasper stone, clear as crystal; 12 And had a wall great and high, and had twelve gates, and at the gates twelve angels, and names written thereon, which are the names of the twelve tribes of the children of Israel: 13 On the east three gates; on the north three gates; on the south three gates; and on the west three gates. 14 And the wall of the city had twelve foundations, and in them the names of the twelve apostles of the Lamb. (Revelation 21:9-14)
"Oh, but that's 'the church'", you will say. The Bible speaks of "churches", not a universal "church." Loose construction leads to false doctrines which play into Satan's plans for the "man of sin", "son of the perdition" who will be the head of this "church." We already see many antichrists in the world -- the "pope" and his "priests" (we have no mediator between God and men but the man Christ Jesus-- 1 Timothy 2:5), Joseph Smith, the muslim's coming Immam, ..., any man who claims to be God's "anointed one." This one will make war on the saints (believers who are alive at that time).
New Jerusalem is a place wherein will dwell every believer/saint who trusts in the finished work of Jesus Christ (the death, burial and resurrection -- what the Bible calls the Gospel), trusting not in our own works, but resting in his.
Christians must know the Bible, not the doctrines of men, and be prepared for the "time is at hand." Here are some good places to start:
The Revelation of Jesus Christ, which God gave unto him, to shew unto his servants things which must shortly come to pass; and he sent and signified it by his angel unto his servant John: 2 Who bare record of the word of God, and of the testimony of Jesus Christ, and of all things that he saw. 3 Blessed is he that readeth, and they that hear the words of this prophecy, and keep those things which are written therein: for the time is at hand. (Revelation 1:1-3)
The Church, which is ALL of the Christian faith community is the “ New Jerusalem” in question.
Take Post number 32 as a gentle correction.