Chapter 5 — Part I — Article III (Of the Incarnation)
Section 189. Q. In what sense is the Most Holy Virgin called Mother of God? A. Although Jesus Christ was born of her not after his Godhead, which is eternal, but after the manhood, still she is rightly called the Mother of God; because he that was born of her was, both in the conception itself and in the birth from her, as he ever is, very God.