Maybe you need to know that he is still God over your was because he has no time restraints. He is the God of my is, the God of my was, and the God of everything that is to come. He's that corporately. He's that universally. But the challenge in the book of Revelation is that it could be going back and forth at any time between those timeframes.
If we were ever to see a catastrophic time on this earth, would we be left to wonder, "Will he keep his promises? Will he do what he said he was going to do? Has he gotten so frustrated with the whole thing that it's like, 'You know what, forget it'"?