Not so sure! Remember the Qumran scrolls (at work, so can't check it up..) But essentially they were several thousand years old Torah scrolls that were found hidden away in a cave in an inaccessible mountainous area. When they were investigated, they found, if I recall correctly, that there were only a few letters that were different to the Hebrew "Torah" today! To Jews, it was a fantastic sign of the holiness of their Torah.
In the New Testament, I think they removed the "apocrypha" books and found some signs that a section had been added to one of the testaments during the Middle Ages. But that was about it! Apart from that, the the gospels were written 50-100 years after the death of Jesus, approximately. To some degree they are supported by a totally independent Roman history writer that was a contemporary of Jesus, but not a Jew. He wrote about it simply because it was major news in the area at the time. His name was Josefus.