And he carried me away in the spirit - Gave him a vision of the city; seemed to place him where he could have a clear view of it as it came down from heaven. See the notes on Revelation 1:10.
To a great and high mountain - The elevation, and the unobstructed range of view, gave him an opportunity to behold it in its glory.
And showed me that great city, ... - As it descended from heaven. See the notes on Revelation 21:2.