I believe the nun’s attempt to build a hierarchy of truths is oversimplified. Sometimes when attempting to simplify a complex topic such as dogmatic theology, in your simplified explanations you sacrifice exactness.
I understand your frustration. I sponsored a candidate a couple years ago and went through RCIA with him. The discussion of dogmas, doctrines, and custom was
painfully presented and I think only served to confuse folks even more.
To seek greater exactness with regard to the theological levels of dogmatic certainty, I recommend the book,
Fundamentals of Catholic Dogma by Dr. Ludwig Ott.
Here’s an exerpt of what Dr. Ott discusses as the theological levels of dogamatic certainty:
§ 8. The Theological Grades of Certainty
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Code:
The highest degree of certainty appertains to the **immediately revealed truths**. The belief due to them is based on the authority of God Revealing (**fides divina**), and if the Church, through its teaching, vouches for the fact that a truth is contained in Revelation, one's certainty is then also based on the authority of the Infallible Teaching Authority of the Church (**fides catholica**). If Truths are defined by a **solemn judgment** of faith (definition) of the Pope or of a General Council, they are "**de fide definita**."
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Code:
Catholic truths or Church doctrines, on which the **infallible Teaching Authority of the Church has finally decided**, are to be accepted with a faith which is based on the sole authority of the Church (**fides ecclesiastica**). These truths are as infallibly certain as dogmas proper.
The two levels of theological certainty discussed above are infallible. Note that a solemn definition by the Church is not required for a doctrine to be considered
fides ecclesiastica.
For example, the doctrine that Mary bore her Son without violation of her virginal integrity is
de fide dogma (infallible) according to Dr. Ott, based
not upon a solemn definition of such by the Church (
de fide definita), but upon the general promulgation of doctrine (
fides ecclesiastica).
Dr. Ott continues…
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Code:
A Teaching proximate to Faith (**sententia fidei proxima**) is a doctrine, which is **regarded by theologians generally as a truth of Revelation, but which has not yet** been finally promulgated as such by the Church.
And example of the above level of theological certainty would be the perpetual sinlessness of Mary. It is a *certain *teaching of the Catholic Church. Yet, it has not yet been solemnly defined as
de fide, FURTHERMORE within the general promulgation of the doctrine, Origen, St. Basil, St. John Chrysostom, and St. Cyril of Alexandria taught that Mary suffered from venial personal faults. Yet, this is a certain (yet not infallible) truth taught by the ordinary universal exercise of the authentic Magisterium, so it is not a “doubtful matter” and as such requires
at least our religious assent.
to be continued …