For certain: God is not the author of confusion. The world of Christendom is filled with confusion, the author of which is Satan. He uses various large denominations to promulgate basic errors which have crept in unawares--the wolves dressed like sheep. They have deceived many. Jesus told His sheep not to believe them, and they don't.
This has seldom been the majority, in fact, the majority of the religious world has not a clue. They know not the truth and are teaching for doctrines the commandments of men. See Gospel of Matthew, Ch. 7, the part about "depart from me, ye that work iniquity, I never knew you." To whom is Jesus speaking?
The Spirit, The Holy, (the other Comforter from Pentecost) leads the congregation through the preaching and teaching of The Word--sola scriptura. Whatever the potentates,popes, etal have said in the past 1600 years is subject to verification in the Word of God. They have all failed the tests. They were born in corruption and have propagated more corruption in every generation. This is the main reason Sola Scriptura has been scorned by the majority--it shows us for what we really are: depraved. We have serious trouble with that paradigm--in our flesh. If our personal interpretation does not agree with the congregation/HS, there is probably something wrong with our personal interpretation.
How does one reform something corrupted?
No es possible.
Selah,
Bro. James