You disappoint me. I had thought you realized that the Church's teachings began BEFORE the "inspired writings" came to be... For the New Testament, this was AT LEAST 20 years, and for the Old Testament, in some cases, it was HUNDREDS of years...
God has always taught through His People, the Church. The books came later, but the People are the official interpretators of these Scriptures and it is THEY who vouch for these letters and their authenticate teachings. Or do you believe in the Da Vinci code?
Regards
People throughout the ages have either unintentionally or deliberately misrepresented God's word. People are poor interpretators of the word simply because of our corrupt nature.