gives a good introduction to the theology...it is exclusively based on Biblical references which a believer should rely on rather than apocalyptic rants from some narcissistic pulpit-slappers. Jesus said when talking to real people in real life (not us), "The kingdom of God does not come with observation; 21 "nor will they say, 'See here!' or 'See there!' For indeed, the kingdom of God is within you." Luke 17:20-21
So it we heard directly from Him...there is no literal city descending from the blue yonder with glitter jewels all over it! Common, that would actually be inferior to God's indwelling spirit.
Armaggedon? Gimme a break...the battle is with your own flesh, not some outside force.
Particularly at play here is the prediction that the 'heaven's and earth shall pass away' and "they" want us to think that this will be the real, physical "space" and "planets" or something, but, the prophets in the Bible repeatedly use this imagery to describe nations being torn down, governments and man's laws being thrown out. When you live in a Nation that is being destroyed...think about it...it would seem like heaven and earth has been destroyed. The Earth will be destroyed in a few million years when the sun explodes. 8-)