Chapter 5 — Part I — Article III (Of the Incarnation)
Section 185. Q. Who was the Virgin Mary? A. A holy virgin of the lineage of Abraham and David, from whose lineage the Saviour, by God's promise, was to come; betrothed to Joseph, a man of the same lineage, in order that he might be her guardian; for she was dedicated to God with a vow of perpetual virginity.