Okay this is for Nutshell,
How can we descend with Chirst if we have not first literally ascended ???
Doctrine and Covenants 88: 96-98
96 And the saints that are upon the earth, who are alive, shall be quickened and be
caught up to meet him.
97 And they who have slept in their graves shall come forth, for their graves shall be opened; and they also shall be caught up to meet him in the midst of the pillar of heaven
98 They are Christs, the first fruits,
they who shall descend with him first, and they who are on the earth and in their graves, who are
first caught up to meet him; and all this by the voice of the sounding of the trump of the angel of God.
The reason this scripture states
we will descend with the Lord, when he sets up his kingdom, is because we will have been "caught up" or taken off the earth/disappear prior to the Lord setting up His kingdom on the earth, so that the Lord, in his mercy, can spare the righteous, by removing them from off the earth, before he destroys the wicked in the last days...