Dan Brown,
Please read some acurate history of the Church.
The NT was not declared to be so until the 300s.
NO ONE disputes this historial fact.
What planet are you from?
Oi vey. Do you honestly not know the difference between having the NT in hand and having a formal list of the books that comprise it? That's like saying that until someone came up with an exhaustive list of Shakespeare's works, we didn't have Shakespeare. Are you honestly ignorant enough to believe that before the Councils of Laodicea, Hippo, and Carthage, the Church fathers were sitting around, twiddling their thumbs, without any Scriptures? Have you never actually read Polycarp, Irenaeus, Ignatius, Hippolytus, etc. and seen how often they quoted NT Scripture with the assumption that their audiences would accept their citations as having God's voice?
If you can't tell the difference between making a list of already authoritative books and giving authority to those books, then you really need to do some homework. I recommend Geisler and Nix's A General Introduction to the Bible for starters.
What planet are you from?
Vulcan, apparently.