You've been taught some mighty inaccurate stuff.
(Probably at a college...)
You should look up the history of the Bible. 49th is quite correct. There are no original copies of the Gospels. Some of the Gospels appear to have evolved from an older version that no longer exists. There was a selection process to determine what scripture was canon and what wasn't. There were many different sects of Christianity in the first few centuries A.D. and the Catholic church did the first major editing. In the subsequent centuries, there have been innumberable translations of both the Old and New testaments, each with its own spin. Like the King James version, which were translated to give political spin for political purposes of that time. You even have it going on today with political revisions such as changing the Son of God to the Child of God (gender neutral version). And on top of that, modern translations lack the cultural and slang contexts from the time when the oldest existing documents were written. Someone reading the parables Jesus used gets a very different meaning than a listener from 2000 years ago.