The Holy Bible, Revelation 21:1-2,10
1 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.
2 And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband.
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…
The Book of Mormon, Ether 13:8-11,13
8 Wherefore, the remnant of the house of Joseph shall be built upon this land; and it shall be a land of their inheritance; and they shall build up a holy city unto the Lord, like unto the Jerusalem of old; and they shall no more be confounded, until the end come when the earth shall pass away.
9 And there shall be a new heaven and a new earth; and they shall be like unto the old save the old have passed away, and all things have become new.
10 And then cometh the New Jerusalem; and blessed are they who dwell therein, for it is they whose garments are white through the blood of the Lamb; and they are they who are numbered among the remnant of the seed of Joseph, who were of the house of Israel.
11 And then also cometh the Jerusalem of old; and the inhabitants thereof, blessed are they, for they have been washed in the blood of the Lamb; and they are they who were scattered and gathered in from the four quarters of the earth, and from the north countries, and are partakers of the fulfilling of the covenant which God made with their father, Abraham.
13 And I was about to write more, but I am forbidden; but great and marvelous were the prophecies of Ether…
Journal of Discourses, Orson Pratt 18:7
Zion will be caught up when Jesus comes, to meet him. Jesus will descend not only upon the Mount of Olives, but he will descend and stand upon Mount Zion. But before he stands upon it, it will be caught up to meet him in the air. Will the buildings of Zion be caught up? Yes. And its land? Yes. And Jesus will stand upon Mount Zion, according to the prediction of John the Revelator, and he will reign over his people during a thousand years; and his associates will be the resurrected righteous of all former dispensations, those, among others, who dwelt on this continent before the flood.
Journal of Discourses, Orson Pratt 21:18
But when we build that great central city, the New Jerusalem, there will be no such thing as the word decay associated with it; it will not decay any more than the pot of manna which was gathered by the children of Israel and put into a sacred place in the ark of the covenant. It was preserved from year to year by the power of God; so will he preserve the city of the New Jerusalem, the dwelling houses, the tabernacles, the Temples, etc., from the effects of storms and time. It is intended that it will be taken up to heaven, when the earth passes away. It is intended to be one of those choice and holy places, where the Lord will dwell, when he shall visit from time to time, in the midst of the great latter-day Zion, after it shall be connected with the city of Enoch.