Well....as I said earlier...the Council of Jamnia got things back to where they were when Ezra and Nehemiah canonized the Hebrew writings....so probably, we should just concern ourselves with the New Testament writings then. Here is an Old Testament prophecy about the New Testament.
We do know whom was spoken of in [Isaiah 8:13-17] as it is in context between [Isaiah 7:14] and [Isaiah 9:6]. Our Lord's Apostles were given the authority to canonize by this prophecy: Sanctify the LORD of hosts himself; and let him be your fear, and let him be your dread. And he shall be for a sanctuary; but for a stone of stumbling and for a rock of offence to both the houses of Israel, for a gin and for a snare to the inhabitants of Jerusalem. And many among them shall stumble, and fall, and be broken, and be snared, and be taken. Bind up the testimony, seal the law among my disciples. And I will wait upon the LORD, that hideth his face from the house of Jacob, and I will look for him.
So....for any authority in this regard we should look to the Apostles themselves.....not some ecclesiastic body. As stated earlier....Our Lord Himself states the Old Testament canon in [Luke 24:44] and it does not include the "Deuts". Right there that tells you something about your qualifications to decide the canon. You guys include them!
On a related note, I have a question for you... Most of the criticisms that you anti-Catholic folks make against the Church are equally applicable to our Eastern Orthodox brethren, yet you folks never seem to worry about them. Why is that?
The Romans started it and the Churches of the East hung on to true doctrine for many years before finally succumbing to your Apostasy......so I cut em' some slack.