"Yea, a voice crying—Prepare ye the way of the Lord, prepare ye the supper of the Lamb, make ready for the Bridegroom.
Pray unto the Lord, call upon his holy name, make known his wonderful works among the people.
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 come down in heaven, clothed in the brightness of his glory, to meet the kingdom of God which is set up on the earth."
Doctrine and Covenants 65:3-5
The connection between preparing the way of the Lord and then the image of the Lord coming down to meet the kingdom of God is really a cool idea, that heaven and earth can meet like that. In the summary before the verses it says "The millennial kingdom of heaven will come and join the kingdom of God on earth," so this is something happening during the Millenium, but still a cool, enormous idea, and one that we can still work on. The ideal of keeping the Spirit with us, and turning our homes into temples, of thinking Celestial -- these are all variations on a similar theme. Live as close to God as we can, until someday we are able to meet Him again in person. Make our lives and the world around us better, more holy, prepare ourselves and others to meet Him. Christ has been on Earth. He knows how messy it is, and how imperfect we are. We don't have to get there overnight. He will help us as we pray and work with him. All of it is leading to this though... the meeting of Heaven and Earth. The restoration of the Lord to his people. All of us, together, never again to be divided through death or pain. Today, let's do what we can to pave the way.