God did.
Old Testament.
Romans 3:1 What advantage then hath the Jew? or what profit is there of circumcision? 2 Much every way: chiefly, because that unto them were committed the oracles of God.
New Testament.
John 14:26 But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you.
That promise was given to Paul and the apostles. No one else.
That promise was given to Paul and the apostles. No one else.Then why did the Apostles not codify the Canon of Scripture?
You: "God did."
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Since there were numerous conflicting "canon lists" in the early years of the Church (and they can't possibly all be right or directly defined, either by God, or by the original apostles, because those canon lists do contain real differences between them), exactly where and when did God say which "books" belong in the Bible (source), and specifically who did God tell this to?
How do you know this happened?
Was that vitally important instruction (about which writings were to be included in the Bible) then written within the Bible itself, or was that vitally important, indispensable instruction something that was passed down to others via some form of extra-biblical (outside-the-Bible) tradition?
Also, do I understand you correctly -- that you seriously think that "all Catholics are wrong", and you also think that "all Protestants are wrong", and you also think that "CynicalBear is right"?