The oldest surviving Christian Bible is from the 4th Century. This article is about how copies of this bible will be available online as of next year. This is great news for Bible scholars.
However, you probably won't hear any mainstream Christian talk about this oldest bible copy. Why not? Well I'll quote the article.
http://ap.google.com/article/ALeqM5g...SSeUwD922E3300Handwritten in Greek more than 1,600 years ago — it isn't exactly clear where — the surviving 400 or so pages carry a version of the New Testament that has a few interesting differences from the Bible used by Christians today.
The Gospel of Mark ends abruptly after Jesus' disciples discover his empty tomb, for example. Mark's last line has them leaving in fear.