I'm writing a story about time travel and religion. I want to get some opinions on the story though?

My concept is that a physicist discovers time travel and is struggling with the urge to go back and to prevent the founding of Christianity and Islam, with the intent on preventing their influence on humanity and Western Society. he believes that humanity would have been better off with Judaism being isolated in Israel. He gives into his desire and travels back to the first century to prevent the crucifixion by warning Pontious Pilate about what was coming. He didn't count on the fact that one of his rivals discovers what he's doing and goes back after him to stop his plan.
My question is this, what would have happened historically had Jesus not been crucified, just locked away in some obscure prison for the rest of his life?
What would happen if instead of being expelled from their lands, the Jews were instead isolated and the Romans built a road system around Isreal locking them out of the trade between Europe, Africa, and Asia?

Jesus would still have sacrificed for man. he still willingly gave himself over to death.

It would stop humans from moving to parts of the world. Old ideas would stay strong so, the bible would have more power.

You would create a paradox. If time travel is at some point invented in the future, there would be no way to change the past. All actions attempting to do so must inevitably produce our current time line. The past has already happened, that includes time travelers from the future.

Christianity only came into the mainstream about 300-400 years after his death, so really, Christianity would have died off.
But hey - fictional characters, so it's not like anything would change. It'd still be made up.

You could have your main character travel back in time and become the new Jesus, except name him Bob.

"Accept Bob or burn in Hell!"

These things are pretty hard to predict. If Jesus hadn't been crucified the Jews would still have been expelled, and it was Judaism which was a major influence on Mohammed. I think we'd probably see an entirely Islamic Europe.

This wouldn't necessarily be a bad thing. Islam was much more enlightened vand tolerant that Christianity up until the end of the Middle Ages. Without an antagonidstic Christian Europe, Islam would probably never have stagnated. Secularism would have developed earlier, and we'd have about 50 years further advancement as of 2008 than we do now.

If neither Christianity nor Islam had developed, we'd probably have a lot less scientific development. Science appears to be a product of monotheism in its search for single truths. Europe might well be a backwater, with China colonising the Americas.

I don't see why the Romans would have wanted to isolate Israel. Prior to the war of 70 CE, Judaea was one of their most profitable and important areas, and there were already a number of Jews living in Roman cities.

I think that you have acknowledged alot of what us Christians believe thats agood start for you . May God bless you with more of the same

what an awesome sounding book
imagine all the blood saved!!!
i'd buy it

Christianity would not have grown and Roma would have stayed powerful their would be many gods and we would have advanced much faster not constrained by the idea that if we do anything against the will of one man ( the pope) our soles would be forever damned. discrimination and oppression would not have been so prevalent. all in all the world would be more stable and a lot more roman.