The most Blessed Virgin Mary was, from the first moment of her conception, by a singular grace and privilege of almighty God and by virtue of the merits of Jesus Christ, Saviour of the human race, preserved immune from all stain of original sin. 135
Catechism number 505
By his virginal conception, Jesus, the New Adam, ushers in the new birth of children adopted in the Holy Spirit through faith. "How can this be?"165 Participation in the divine life arises "not of blood nor of the will of the flesh nor of the will of man, but of God".166 The acceptance of this life is virginal because it is entirely the Spirit's gift to man. the spousal character of the human vocation in relation to God167 is fulfilled perfectly in Mary's virginal motherhood.