While many like to point to the Bible and say it's just a bunch of stories written by a bunch of men, I'd like to point out that there have been a number of archeological finds that "confirm" things written of in the Bible. Therefore, even for just a bunch of stories, there seems to be an element of truth to the Bible, so I don't think it should be discounted.
There is certainly truth to the Bible, and I think it describes a great moral code that people should try to live by.
But, even if we find evidence that there may have been a man named jesus, and that he was crucified, there is no way to prove that that man was the son of God.
There is just no way to prove that God communicated with anyone in anyway.