Chapter 5 — Part I: The Creed — Article III: Who Was Conceived by the Holy Ghost, Born of the Virgin Mary
Section 27. As, then, by the power of the Holy Ghost, and in a manner superior to the order of nature, He was made man and was born, was holy and even holiness itself, so does it become our duty to be born, not of blood, nor of the will of the flesh, but of God; to walk as new creatures in newness of spirit, and to preserve that holiness and purity of soul which so much becomes men regenerated by the Spirit of God. Thus shall we reflect some faint image of the holy Conception and Nativity of the Son of God, which are the objects of our firm faith, and believing which we revere and adore the wisdom of God in a mystery which is hidden.