Yeah... I'll stick with scripture if that's OK with you.
Guys sitting around inventing stuff that the Holy Spirit never communicated to Prophets and Apostles pretty much found cults; there have been several in last 2 millennia, some more successful and longer lived than others.
Yes. Cult.
Jesus first and foremost gave us the Church, vested with authority. It is the Church that gave us the scriptures, (years after the ascension of our Lord.)
To reject the Church is akin to killing the bird that lays the eggs, saying that all you need are the eggs.
For example, prior to the first Bible, what was the New Testament?
According to Wikipedia,
“Pope Damasus I assembled the first list of books of the Bible at the Council of Rome in 382 CE.”
And prior to the invention of the printing press centuries later, what were the flock to rely on? The Church and her Pope, Bishops and Priests. Outside of them there was not the Christian faith.
And in spite of the printing press and now the radio, TV and internet, the full authority on earth rests in the Church, and not in the Bible alone.