Reply Obj. 1: The truth of faith is contained in Holy Writ, diffusely, under various modes of expression, and sometimes obscurely, so that, in order to gather the truth of faith from Holy Writ, one needs long study and practice, which are unattainable by all those who require to know the truth of faith, many of whom have no time for study, being busy with other affairs. And so it was necessary to gather together a clear summary from the sayings of Holy Writ, to be proposed to the belief of all. This indeed was no addition to Holy Writ, but something taken from it.
Reply Obj. 2: The same doctrine of faith is taught in all the symbols. Nevertheless, the people need more careful instruction about the truth of faith, when errors arise, lest the faith of simple-minded persons be corrupted by heretics. It was this that gave rise to the necessity of formulating several symbols, which nowise differ from one another, save that on account of the obstinacy of heretics, one contains more explicitly what another contains implicitly.
Reply Obj. 3: The confession of faith is drawn up in a symbol in the person, as it were, of the whole Church, which is united together by faith. Now the faith of the Church is living faith; since such is the faith to be found in all those who are of the Church not only outwardly but also by merit. Hence the confession of faith is expressed in a symbol, in a manner that is in keeping with living faith, so that even if some of the faithful lack living faith, they should endeavor to acquire it.
Reply Obj. 4: No error about the descent into hell had arisen among heretics, so that there was no need to be more explicit on that point. For this reason it is not repeated in the symbol of the Fathers, but is supposed as already settled in the symbol of the Apostles. For a subsequent symbol does not cancel a preceding one; rather does it expound it, as stated above (ad 2).
Reply Obj. 5: If we say: "'In' the holy Catholic Church," this must be taken as verified in so far as our faith is directed to the Holy Ghost, Who sanctifies the Church; so that the sense is: "I believe in the Holy Ghost sanctifying the Church." But it is better and more in keeping with the common use, to omit the 'in,' and say simply, "the holy Catholic Church," as Pope Leo [*Rufinus, Comm. in Sym. Apost.] observes.
Reply Obj. 6: Since the symbol of the Fathers is an explanation of the symbol of the Apostles, and was drawn up after the faith was already spread abroad, and when the Church was already at peace, it is sung publicly in the Mass. On the other hand the symbol of the Apostles, which was drawn up at the time of persecution, before the faith was made public, is said secretly at Prime and Compline, as though it were against the darkness of past and future errors. _______________________
TENTH ARTICLE [II-II, Q. 1, Art. 10]
Whether It Belongs to the Sovereign Pontiff to Draw Up a Symbol of
Faith?
Objection 1: It would seem that it does not belong to the Sovereign Pontiff to draw up a symbol of faith. For a new edition of the symbol becomes necessary in order to explain the articles of faith, as stated above (A. 9). Now, in the Old Testament, the articles of faith were more and more explained as time went on, by reason of the truth of faith becoming clearer through greater nearness to Christ, as stated above (A. 7). Since then this reason ceased with the advent of the New Law, there is no need for the articles of faith to be more and more explicit. Therefore it does not seem to belong to the authority of the Sovereign Pontiff to draw up a new edition of the symbol.
Obj. 2: Further, no man has the power to do what is forbidden under pain of anathema by the universal Church. Now it was forbidden under pain of anathema by the universal Church, to make a new edition of the symbol. For it is stated in the acts of the first* council of Ephesus (P. ii, Act. 6) that "after the symbol of the Nicene council had been read through, the holy synod decreed that it was unlawful to utter, write or draw up any other creed, than that which was defined by the Fathers assembled at Nicaea together with the Holy Ghost," and this under pain of anathema. [*St. Thomas wrote 'first' (expunged by Nicolai) to distinguish it from the other council, A.D. 451, known as the "Latrocinium" and condemned by the Pope.] The same was repeated in the acts of the council of Chalcedon (P. ii, Act. 5). Therefore it seems that the Sovereign Pontiff has no authority to publish a new edition of the symbol.