Ok I'll take the last word here and sum up the facts!!
Jesus most probably did exist. The mythical elements of his life, virgin birth, 12 apostles, baptism by the most holy of the faith he was to "improve", miracles, torturous death and resurrection, were added later to sell his message around the the Roman empire. He had a simple message of living simply and defeating the Romans by not playing their economic and power games. This message was twisted a bit by followers as they moved around the empire to be in accordance with what would sell to people from each area, based upon their political and religious prejudices. For this reason the idea it was the Jews, rather than the Romans, who executed Jesus was the accepted story by the church as we know recognise it is because this is what Roman leadership in the 3rd and 4th centuries would have preferred.
Christianity became so popular in the Roman empire because it was the religion for the poor, the weak and the dispossessed, in my opinion similar to socialism/communism in the 20th century. However, the reason it still exists to this day is that society needs religion to reflect and justify itself. Rome was a republic and in other times and places lasting empires with one ruler were rare. So a college or pantheon of gods represented how they saw their lives run. Rome was now a dominating empire with one ruler, monotheistic religion was needed to reflect that. Christianity was the natural choice as it was new enough to be molded to suit the purposes of the Emperor.
So all scripture of the Christians was removed that didn't portray the message that suited Roman Emperors.
Science was never ever likely to disprove the claims of the bible. In fact for most of history the best scientists and mathematicians have been deeply religious and thought that reaching for deeper understanding was bringing them closer to "the mind of god". The beginnings of perhaps the most fascinating maths, set theory, and how it has unified nearly all of maths beginning the golden age of mathematics, which is still happening, is a good example of this. Cantor, one of my favourites, was deeply religious, as well as other mental fragilities, and thought that god lived in the infinite and to understand infinity was to understand god. Another example of this is the beginnings of modern biology from the work of a monk on hereditary.
The scientific research following on from this has slowly shown that while we may never prove that god doesn't exist there is certainly NO PERSONAL GOD and if anything he is something like a computer programmer that set a few rules for a random algorithm to run .... on an infinite loop!!
Archaeology has also shown that close to zero of the old testament is true, by true I mean exactly as was state in the bible. There was a great flood when the Black Sea and Mediterranean became on sea at the end of the last ice age, and perhaps a few slaves did escape Egypt with the plagues on Egypt sounding much like the destructive forces a massive volcano, perhaps the one that finished of Minoa, I won't go into that too much otherwise that is another "essay", but there was certainly no "exodus", no world wide flood and no way of fitting 1,000,000 species on a boat in pairs.
On top of this the Jews of the old testament were just Canaanites who rejected the life styles of the cities and began a simple life in small towns. Without even studying the new testament the contradictions between each gospel show that while a person called Jesus probably existed we can ascertain nearly nothing of what really happened in his life.
Judaism, can be discounted with my critique of the old testament and really just this and the fact that Christianity and Islam are nothing more than slightly altered plagiarisms of Judaism is enough to now that they are not "the irrefutable word of god" because if they were then god is an idiot who let people go around for a long time, with no intervention, telling much of the world that they have the "irrefutable word of god" only to have another person pop up with a different "irrefutable word of god".
So while we can never 100% discount that the whole of creation had a creator it certainly was not a personal god, no religion ever devised since has ever produced a theology that stands up to reality and things like quantum mechanics and random mutation show that it would have had no idea how the universe and even just the life on this particular planet would turn out. Given that we can say with close to 100% surety that god doesn't care what choices you make in your life so base your moral reasoning about what is the right thing to do from your understanding and take from the Jesus message of do unto others what you'd have done unto you, obviously with the hope that you're mature enough to put yourself in their shoes as well.
That's it, debate over.