changes in the “no salvation outside the church” doctrine raise a practical concern about the actual value of an allegedly infallible magisterium. For example, we are often told we need an infallible magisterium to interpret the Bible, but much less appreciated are the intractable problems of interpreting the magisterium itself. Is such an entity really the solution to division and confusion if nearly everyone can misunderstand it for six hundred years? How do we know that current universal understanding of magisterial teaching won’t be similarly overturned in another six hundred years?

