Some are mistaken about what comprises the Church’s ordinary magisterium. They think that if the wide body of Catholic bishops, cardinals, and priests hold to a given doctrine over an extended period of time this makes it magisterial, but not so. If the majority of Catholic bishops, cardinals, and priests adhere to the ideologies of humanism, modernism, ecumenism, and alienism, does this make these errors infallible, or does it mean these prelates are heretics?
Let us not forget the teaching of St. Augustine: “Wrong is wrong even if everybody is doing it, right is right even if nobody is doing it.” What makes an article of faith infallible is the fact that Jesus Christ himself set it in stone 2000-years ago, not that a body of bishops endorsed it. (1)
The Doctrine of Modernists
The modernists deny this. They promote the idea that any doctrine that the Church holds to at any given point of its history is the result of a common consensus of bishops so that as the consensus changes the doctrine changes with it. This is heretical.
The idea that doctrine can evolve or develop or that our understanding of it can change was condemned by St. Pope Pius X.
“’Progress’ of dogmas is, in reality, nothing but corruption of dogmas . . . I absolutely reject the heretical doctrine of the evolution of dogma, as passing from one meaning to another, and different from the sense in which the Church originally held it.” (Pascendi Dominici Gregis, September 8, 1907)