Says who?
The original Bible was a large collection of stories and poems using the the traditional stories of the Babylonian religion as a base, and building on them. It was extremly fractured and as a good example we have the Evionites/Ebionites. The original Christian sect in Jerusalem and they did not count Paul as an apostle, and still don't. Now their reasons are lost in history, but it is still food for thaught. Omitting the evangelium of Paul would change the meaning of the Bible quite a bit wouldn't it? And these guys were the first Christians ever that had actually met and known Jesus personaly. So they should know, right?
The Egyptian Kopts had their own variety of Christianity which was a lot older than the Roman and which was out-lawed after the first council of Nicea. The Aryans had their own version and their own version of the Christian Bible.
When Emperor Constantin introduced the Bible there was a pretty even split among Christians between the Donatists, (Christians who rejected the new Bible and considered Constantin the Devil) and the non-Donatists who now saw Constantin as the new leader of the Christian Church, which today could seem quite strange since Constantin himself wasn't even Christian. So who knows. Maybe the Donatists were right and the modern Christian Bible is the work of Satan?
My point is that there through-out history have been a wide-variety of Christian Bibles with a wide variety of teachings. Jesus being the son of god, Jesus being an ordinary human and so forth. Just because one Bible won out over the rest, (ie the Versio Vulgata) doesn't add to it's authenticity. There's been lots of great ideas lost in history. Just ask any Jazz-musician. Why not just make your religion your own. Nobody can win the "my religion is more authentic" discussion. I suggest you following your heart and your brain. Don't just submit to what you know out of habit.
"Flesh takes over", is that some Christian lingo for being horny? If god has a problem with that I suggest changing religions. Sounds like it's likely to get a bit boring in the long run.