then God left the faithful without the vital cornerstone of the faith for about 400 years
also you have no way of determining the correct canon of scripture, even if scripture itself told you the canon that would still beg the question of whether or not your version of scripture is genuine or a fraud
you need an extra-biblical authority - the Church - in order to affirm the canonicity and interpretation of scripture
Church comes before scripture, scripture is inferior to and contingent upon the Church