κατὰ τὴν προσηγορίαν.  Compare Aristotle, Categories, V. 30:  τῷ σχήματι τῆς προσηγορίας.  Cyril’s description of faith as twofold, and of dogmatic faith as an assent (συγκατάθεσις) of the soul to something as credible, seems to be derived from Clement of Alexandria, Strom. II. c. 12.  Compare by all means Pearson on the Creed, Art. I. and his Notes a, b, c.