Dominus Iesus - "firmiter ... credendum" (firmly believed)


What level of assent does “firmly believed” (firmiter … credendum) mean? For examples, see nn. 5, 10, 13, 14, 16, and 20 of Dominus Iesus (and in Latin).

I assume it means “sacred assent” (assent given to an infallible teaching) because Lumen Gentium n. 18, which reiterates the permanence and primacy of the Bishop of Rome, says: “This teaching concerning the institution, the permanence, the nature and import of the sacred primacy of the Roman Pontiff and his infallible teaching office, the sacred synod proposes anew to be firmly believed (firmiter credendam) by all the faithful, and, proceeding undeviatingly with this same undertaking, it proposes to proclaim publicly and enunciate clearly the doctrine concerning bishops, successors of the apostles, who together with Peter’s successor, the Vicar of Christ and the visible head of the whole Church, direct the house of the living God.”


According to the CDF’s “Doctrinal Commentary on the Concluding Formula of the Professio Fidei”:

The object of doctrines de fide credenda are “all those doctrines of divine and catholic faith which the Church proposes as divinely and formally revealed and, as such, as irreformable.”

The assent to these doctrines is “based directly on faith in the authority of the Word of God,” so to “obstinately” deny them or place them in doubt puts one “under the censure of heresy”.


Thank you!


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