The Church distinguishes what is divinely revealed, what must be definitively held, and what is authoritative but not definitive. Each is owed a different response, and knowing which level you are on is what allows a Catholic to assent properly or to question responsibly.
How to read this section
Not a case, but the tools for reading the cases: how to tell what binds you, and how to tell a genuine development from a reversal.
The record
What was actually said, when, and by whom — with the documents linked wherever a public text exists.
- 1964
Vatican II sets out what is owed to the ordinary teaching of the bishops and the pope: 'religious submission of will and of mind' — real adherence, even where no infallible definition has been given.
Lumen Gentium 25, 21 November 1964 · read it - 1998
The Profession of Faith is given three distinct paragraphs for three distinct levels of teaching, with a doctrinal commentary explaining each — the clearest statement the Church has published of how her teaching is graded.
John Paul II, motu proprio Ad Tuendam Fidem, and the accompanying CDF commentary on the Professio Fidei · read it
The three levels
First: what is divinely revealed. These are the truths contained in the word of God and proposed as such by the Church — the dogmas. They are owed the assent of divine and catholic faith, and to reject one obstinately is heresy in the formal sense. The Trinity, the Incarnation, the Real Presence, the Resurrection.
Second: what must be definitively held. Truths not themselves revealed, but so necessarily connected to revelation that the Church can teach them definitively — the validity of a papal election, the canonization of a saint, the illicitness of euthanasia. These are owed firm and definitive assent, though not the assent of faith properly speaking.
Third: authoritative but not definitive teaching. The great body of the Church's ordinary teaching on faith and morals, given to help the faithful understand revelation and live by it. This is owed what Lumen Gentium calls religious submission of will and mind — a genuine adherence, not a polite nod, and not a licence to dissent because one finds an argument unpersuasive.
Why the third level is where the trouble is
Almost every argument about whether doctrine has changed is really an argument about the third level, and about a fourth thing that is not doctrine at all: prudential judgment — the Church's application of a principle to particular circumstances, where the principle binds and the application may be debated by people of good faith.
This distinction is not a loophole. It is what makes it possible to hold, without disloyalty, that a papal judgment about economic policy or a prudential assessment of a war is mistaken, while giving unreserved assent to the doctrine those judgments were applying. It also cuts the other way: the fact that a teaching has not been solemnly defined does not make it optional, and 'it isn't dogma' is not an argument.
What binds a Catholic today
- ⚖Dogmas: the assent of divine and catholic faith. To deny one obstinately is heresy.
- ⚖Definitively held truths: firm and definitive assent.
- ⚖Authoritative non-definitive teaching: religious submission of will and mind (Lumen Gentium 25).
- ⚖Prudential applications: taken seriously and weighed, but open to legitimate disagreement among Catholics.
Follow it further
Every citation on this page was checked against the document it names, and linked where a public text exists. Where Catholics of good faith genuinely disagree, the page says so rather than pretending the question is settled.