§507
Creed › … › Paragraph 2. "Conceived by the Power of the Holy Spirit and Born of the Virgin Mary"
Mary's virginal motherhood in God's plan
At once virgin and mother, Mary is the symbol and the most perfect realization of the Church: "the Church indeed. . . By receiving the word of God in faith becomes herself a mother. By preaching and Baptism she brings forth sons, who are conceived by the Holy Spirit and born of God, to a new and immortal life. She herself is a virgin, who keeps in its entirety and purity the faith she pledged to her spouse."
Source: Catechism of the Catholic Church (Vatican.va)