Cecelia5578 wrote:despite having a 400 years headstart to christianity - twice the time it took christianity to play a role in politics
Christianity's "role in politics" comes about only because of the spectacularly hard to predict event of Constantine's vision. What evidence is there that, prior to Constantine, Christianity was making substantial headway among the Roman government at various levels (and no, I don't think Severus really counts)? All it takes is one emperor to have a similar Jewish vision, and the status of being a state religion would allow Judaism to take off.
You have got to be kidding me. I suggest you read up on the african church and their dealings in government. Christianity was a phenomenon that was almost (with the exception of Gaul, Germany and Britannia) empire - wide. It was rooted in all levels of society and had a broad population base. Unlike Judaism, which was always centered in the middle east, the center of the christian church was in africa, asia and Italy itself. Also, Judaism....especially considering the isolaionist movement, would most likely never have achieved the same status.
Oh, and there is the "small" problem that according to the roman perception, a emperor had to be whole in body. Mutulation (which the romans thought circumcision to be) was not only outlawed, it would have immediately disqualified an emperor in the eyes of the soldiers. Heck, there is no evidence of Jews even being simple cohort commanders.
Zoroastrianism is of course intimately tied to the Persian state, but its not totally outside the realm of possibility for the Persians to conqueror (as they did in the early 7th century) large portions of the Roman Near East, and introduce it via that route. Especially without Christianity present, who knows what would happen?
The same thing that happened during any persian incursion - as soon as they were gone, the temples were destroyed. And the persians never conquered territory long enough to influence a whole generation, what makes you think they will manage to do the same when coming up against an empire that is not embroiled in religious infighting?
All of this ignores the fact that Judaism was successful in making new converts, especially among women, and were hardly "ethnocentric" and closed off from the Roman world. *cough*Septuagint*cough*
Judaism never played a large role in the empire's politics. If anything, they are a second-tier player, taking a backseat to manichaeism, mithraism, the various heliocentric cults or the pagan gods. Heck, show me a roman aristocrat or army commander who was jewish.
Also, the Septuagint was long before any roman ever set foot in the middle east. During the time period we are talking about, there was no largescale succesful judaic conversion.