α) The first question that arises with regard to this twofold faith and necessity is: Are sinners preparing for justification, and the faithful in general, obliged by necessity of precept to believe explicitly all revealed truths? The answer is, No; because this is practically impossible, and God does not demand the impossible. Generally speaking, it is sufficient to have an explicit knowledge of, and give one’s firm assent to, the more important dogmas and moral precepts—the twelve articles of the Apostles’ Creed, the Commandments of God and the Church, the Sacraments (as needed), and the Our Father. All other revealed truths need be held only _fide implicitâ_.(795) More is of course demanded of educated persons and those who are in duty bound to instruct others, such as priests and teachers.(796) β) A more important and more difficult question is this: Are there any dogmas, and if so how many, which must be believed by all men _fide explicitâ_ and _necessitate medii_? St. Paul says: “Without faith it is impossible to please God, for he that cometh to God, must believe that He is, and is a rewarder to them that seek Him.”(797) With but few exceptions,(798) Catholic theologians maintain that the Apostle in this passage means theological faith, based upon supernatural motives. This interpretation is borne out by the context, by such parallel texts as John III, 11 sqq., 32 sqq., 2 Tim. I, 12, 1 John V, 9 sq., and by the decisions of several councils.(799) There can be no reasonable doubt that all men, to be justified and saved, must have an explicit belief in at least two dogmas, _viz._: the existence of God and eternal retribution. Pope Innocent XI condemned the Jansenist proposition that explicit belief in divine retribution is not necessary for salvation.(800) Are there any other dogmas which must be explicitly believed _necessitate medii_? The only dogmas which might come in question are: the Trinity, the Incarnation, the immortality of the soul, and the necessity of grace. The last-mentioned two may be omitted from the list, because St. Paul does not mention them,(801) and for the additional reason that belief in immortality is included in the dogma of eternal retribution, while the necessity of grace is inseparably bound up with the dogma of Divine Providence, which in its turn is but a particular aspect of eternal retribution.(802) Hence the only two dogmas in regard to which the question at the beginning of this paragraph can reasonably be asked, are the Blessed Trinity and the Incarnation. Theologians are divided in the matter. Some maintain that no human being can or could ever be saved without explicit belief in both the Trinity and the Incarnation. Others(803) hold that this _necessitas medii_ did not exist under the Old Covenant. A third school(804) avers that no such necessity can be proved either for the Old or the New Dispensation.