"...Religious submission of will and of mind must be shown in a special way
to the authentic teaching authority of the Roman Pontiff, even when he is
not speaking ex cathedra ("from the chair" of Peter). That is, it must be
shown in such a way that his supreme magisterium is acknowledged with
reverence, the judgements made by him are sincerely adhered to, according to
his manifest mind and will. His mind and will in the matter may be known
chiefly either from the character of the documents, from his frequent
repetition of the same doctrine, or from his manner of speaking."
(Dogmatic Constitution on the Church [No. 25], Second Vatican Council).
The responsibility for teaching doctrine and judging orthodoxy belongs to
the official teaching authority of the Church. This authority is
personalized in the pope, the successor of St. Peter as head of the Church,
and in the bishops together and in union with the pope, as it was originally
committed to Peter and to the whole college of Apostles under his leadership.
They are the official teachers of the Church.
Others have auxiliary relationships with the magisterium: theologians, in the
study and clarification of doctrine; teachers - priests, religious, lay
persons - who cooperate with the pope and bishops in spreading knowledge of
religious truth; the faithful, who by their sense of faith and personal
witness contribute to the development of doctrine and the establishment of
its relevance to life in the Church and the world.
As Pope Paul noted in an address at a general audience on January 11, 1967,
the magisterium "is a subordinate and faithful echo and secure interpreter
of the divine word." It does not reveal new truths, "nor is it superior to
Sacred Scripture." Its competence extends to the limits of divine
revelation manifested in Scripture and tradition and the living experience
of the Church, with respect to matters of faith and morals and related
subjects.
Official teachings in these areas is infallible when it is formally defined,
for belief and acceptance by all members of the Church, by the pope, acting
in the capacity of supreme shepherd of the flock of Christ, and when
doctrine is proposed and taught with moral unanimity of bishops with the
pope in a solemn collegial manner as in an ecumenical council, and/or in the
ordinary course of events. Even when not infallibly defined, official
teaching in the areas of faith and morals is authoritative and requires
religious assent.
The teachings of the magisterium have been documented in creeds, formulas of
faith, decrees and enactments of ecumenical and particular councils, various
kinds of doctrinal statements, and other teaching instruments. They have
also been incorporated into the liturgy, with the result that the law of
prayer is said to be a law of belief.