A Jewish rabbi states:
The purpose of the Jewish people—the objective of all Jewish history—is the marriage of heaven and earth. While many spiritual seekers and virtually all religions seek to escape the confines of the flesh and climb heavenward, the Jew is charged with a far more profound calling: first create peace, then build a bridge, and finally marry heaven and earth. (Source)
I have heard similar sentiments from the Jewish community, for instance Mt Sinai being a marriage of heaven and earth. I would not accept every word from a Jewish rabbi by default, since they don't share my views on Christ as the Messiah or the restored gospel. But they have insight into ancient Hebrew language and culture that is our heritage and I find this quote interesting and fitting within a Latter-Day Saint framework.
The Bible opens and closes with a marriage. After the creation of man (Adam), God gives him a help meet and commands the two to be one flesh. In Revelation 19:7, "the of the is come, and his wife hath made herself ready". In Revelation 21:9, an angel shows John "the bride, the Lamb's wife". The emphasis here from my side is not the fact that Revelation happens to be the last book in the New Testament (it was probably not the New Testament book written last), but the events described in these chapters mark the ending of the history of the telestial earth, just like Adam and Eve marked the beginning.
In the beginning, God created the heaven and the earth. The first marriage united humans with each other. Together we make our way back toward heaven. The last marriage unites heaven and earth (humans and God). This happens when the wife of the Lamb (Zion) has made herself ready.
I have posted about heaven and earth before but never really noticed D&C 65. It is a hidden gem fitting squarely into the concept of a marriage between heaven and earth in the latter days.
1 Hearken, and lo, a voice as of one sent down from on high, who is mighty and powerful, whose going forth is unto the ends of the earth, yea, whose voice is unto men— ye the way of the Lord, make his paths straight.
2 The of the of God are committed unto man on the earth, and from thence shall the roll forth unto the ends of the earth, as the which is cut out of the mountain without hands shall roll forth, until it has the whole earth.
3 Yea, a voice crying— ye the way of the Lord, prepare ye the of the Lamb, make ready for the .
4 Pray unto the Lord, upon his holy name, make known his wonderful among the people.
5 Call upon the Lord, that his kingdom may go forth upon the earth, that the inhabitants thereof may receive it, and be prepared for the days to come, in the which the Son of Man shall down in heaven, in the brightness of his , to meet the of God which is set up on the earth.
6 Wherefore, may the of God go forth, that the of heaven may come, that thou, O God, mayest be in heaven so on earth, that thine may be subdued; for is the honor, power and glory, forever and ever. Amen.
This marriage happens at the second coming. Many Christians have tried to speculate when the second coming of Christ will occur. The answer is given in this section: When we have made ready for the Bridegroom. We don't know the time of that of course, but it seems to be up to us. When Zion is "married" in unity, according to the heavenly pattern of unity, we are "prepared for the days to come". A prerequisite for "the kingdom of heaven [to] come" is that the kingdom of God on earth goes forth and we are ready to meet Him.
The charge of the Jews to "create peace" and "build a bridge" is a good description of our charge as modern day Israelites to help "the gospel roll forth", build Zion and establish the kingdom of God on earth to prepare the way of the Lord.