What's interesting about that is it's obviously only referring to the book of Revelations itself, since "The Bible" as such didn't even exist at the time, if it isn't a late addition. Yet Christians apply it to scripture as a whole.
Also, IIRC, Revelations almost didn't even make it into the Biblical canon, like a lot of other apocryphal books it was considered too crazy for the mainstream.
"The Bible" is a Christian invention. What existed was the Torah and other Hebrew texts, whose incorporation into Christian canon is based on retroactive continuity, and has never been recognized as valid within Judaism.
Also, IIRC, Revelations almost didn't even make it into the Biblical canon, like a lot of other apocryphal books it was considered too crazy for the mainstream.