Dr. Swainson Creeds of the Church, p. 17. represents the matter somewhat differently:  “When we come to the profession of his own personal faith which was made at Jerusalem by the Candidate for Baptism, we find that this was far briefer not only than the collection of ‘necessary things’ (Cat. iv.), but also than the Creed of the Church of Jerusalem.”  Then after quoting the short form in Cyril, Myst. i. § 9, “I believe in the Father, and in the Son, and in the Holy Ghost, and in one Baptism of repentance,” Dr. Swainson adds:  “The words are clear and definite.  In these words each answered the question of which we read elsewhere, ‘Did he believe in the name of the Father, and the Son, and the Holy Spirit?’  In this his reply the Candidate ‘confessed’ what Cyril called ‘the saving confession.’”