Whether the articles of faith have increased in course of time?

Objections

Objection 1 : It would seem that the articles of faith have not increased in course of time. Because, as the Apostle says (Heb. 11:1), "faith is the substance of things to be hoped for." Now the same things are to be hoped for at all times. Therefore, at all times, the same things are to be believed.
Objection 2 : Further, development has taken place, in sciences devised by man, on account of the lack of knowledge in those who discovered them, as the Philosopher observes (Metaph. ii). Now the doctrine of faith was not devised by man, but was delivered to us by God, as stated in Eph. 2:8: "It is the gift of God." Since then there can be no lack of knowledge in God, it seems that knowledge of matters of faith was perfect from the beginning and did not increase as time went on.
Objection 3 : Further, the operation of grace proceeds in orderly fashion no less than the operation of nature. Now nature always makes a beginning with perfect things, as Boethius states (De Consol. iii). Therefore it seems that the operation of grace also began with perfect things, so that those who were the first to deliver the faith, knew it most perfectly.
Objection 4 : Further, just as the faith of Christ was delivered to us through the apostles, so too, in the Old Testament, the knowledge of faith was delivered by the early fathers to those who came later, according to Dt. 32:7: "Ask thy father, and he will declare to thee." Now the apostles were most fully instructed about the mysteries, for "they received them more fully than others, even as they received them earlier," as a gloss says on Rm. 8:23: "Ourselves also who have the first fruits of the Spirit." Therefore it seems that knowledge of matters of faith has not increased as time went on.