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Title text: And the heaven departed as a scroll when it is rolled together, but then more heaven kept appearing to replace it, as if the scroll was infinite.

Wait, so is this actually happening during the events of the Bible, or is someone just quoting it?

I interpreted it as being when the bible was written (which if I understand correctly, is before when it takes place, since it's about the end of the world). I'm not sure, though. I might be missing something due to not being super-familiar with the bible.

I interpreted it the same as chridd. John was the one who wrote Revelation, so it seems likely this is intended to be him directly saying it. Also, his avatar is stood by the sea, whilst John recorded Revelation whilst living on the island of Patmos (so island = near sea = this is John the Apostle).

I could be wrong though.