His letters contain some things that are hard to understand, which ignorant and unstable people distort, as they do the other Scriptures , to their own destruction.This is why Jesus didn't leave us with a book, but with a Church.
Go therefore and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit, teaching them to observe all that I commanded you; --JesusWhere does JESUS give similar TEACHING AUTHORITY to Scripture? Jesus gives the Apostles the power to "bind and loose," ie, ultimate/final ecclesial authority. And the Apostles occupied the OFFICE of bishop."if he won't listen to the church, treat him as a pagan or tax collector." --Jesus ...which is the church of the living God, the pillar and foundation of truth.