But people should work on understanding their faith rather than accepting things blindly. Faith need not be blind, the Church teaches that.
Some aspects of the faith are incomprehensible so it is necessary to follow what the Church teaches lamb-like.
I will give an example of something that requires difinitive assent. Blessed Pope John Paul II wrote something which many have not understood:Wherefore, in order that all doubt may be removed regarding a matter of great importance, a matter which pertains to the church’s divine constitution itself, in virtue of my ministry of confirming the brethren I declare that the church has no authority whatsoever to confer priestly ordination on women and that this judgment is to be definitively held by all the church’s faithful. (1994 Ordinatio Sacerdotalis)
Later Cardinal Ratzinger wrote:
In view of a magisterial text of the weight of the present Apostolic Letter, inevitably another question is raised: how binding is this document? It is explicitly stated that what is affirmed here must be definitively held in the Church, and that this question is no longer open to the interplay of differing opinions. Is this therefore an act of dogmatizing? Here one must answer that the Pope is not proposing any new dogmatic formula, but is confirming a certainty which has been constantly lived and held firm in the Church. In the technical language one should say: here we have an act of the ordinary Magisterium of the Supreme Pontiff, an act therefore which is not a solemn definition ex cathedra, even though in terms of content a doctrine is presented which is to be considered definitive. In other words, a certainty already existing in the Church, but now questioned by some, is confirmed by the Pope’s apostolic authority. It has been given a concrete expression, which also puts in a binding form what has always been lived
The Congregation for the Doctrine of the Faith (CDF) on October 28, 1995 answered a dubium on this:
This teaching requires definitive assent, since, founded on the written Word of God, and from the beginning constantly preserved and applied in the Tradition of the Church, it has been set forth infallibly by the ordinary and universal Magisterium (cf. Second Vatican Council, Dogmatic Constitution on the Church Lumen gentium 25, 2). Thus, in the present circumstances, the Roman Pontiff, exercising his proper office of confirming the brethren (cf. Lk. 22:32), has handed on this same teaching by a formal declaration, explicitly stating what is to be held always, everywhere, and by all, as belonging to the deposit of the faith.
