Some scholars consider it a discussion of the politics and history of the eastern Mediteranean region during the very time period you are claiming is never mentioned in the Bible. The book would be written in veiled language due to the possibility of retribution. In fact, apocylyptical (sp?) literature was often written concerning current or recent events for that very reason.
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First off, if you read some Biblical "scholars", you soon realize that you are dealing with largely irrational beings and occasionally serious nutcases.
Biblical "scholarship" is quite different from true scholarship. In the latter, one surveys the evidence and drwas a conclusion. Biblical "scholarship" dopes it all bass-ackwards: it begins with the conclusion and tries to assemble the proof from a potpourri of evidence: what does not fit is pitched out and possibly declared satanic. What can be made to fit is pounded into theories (like the one about how the Romans had some sort of KGB that arrested those who said naughty things about Rome). Biblical scholarship is less scientific by several orders than modern conspiracy theories, and is not to be taken seriously. Certainly not by me.
Retribution against whom? Scholars do not even agree who wrote the Book of Revelation. Presumably, Babylon (which had fallen long, long LONG) before the period in which it was prophesied to fall, was Rome itself. One observes that Jerusalem was in deed obliterated, and Rome has been looted from time to time, but never obliterated. So as prophesy, so far the Book of Revelation is a steaming load of crap.
Books were not published as they are today. They were copied out in longhand. They were not sold, either, but simply passed around as a letter might be passed around. In most cases, scrolls and books were mislabeled with the names of ancients who did not actually write them, so the Roman authorities would be quite unlikely to be able to nab the actual author of the Book of Revelations.
To say that Jesus cast seven demons out of Mary Magdalene indicates that (a) demons really do exist and are the cause of aberrent behavior (2) can actually be counted. That is, if we assume the Bible to be the Word of God, then we must accept that demons are at least a cause of wickedness as well as insanity (as in the schtick regarding the Gaderine swine).
To which I can only say, 'Oh, please' and 'Gimme a break'.
I have always found it interesting that the Jews insist on one single God, who is all powerful, but who strangely needs help from angels. Why?
And then one Satan is just not enough. There must also be a Beelzebub, an Azuriel and a legion of demons.
Even the Moslems believe in a plurality of jinns and evil spirits.
Weird!