Looking first at Scripture, the principal basis for the doctrine of Mary as Spiritual Mother of all humanity is found in the Gospel of John. In this scene, Mary is at Calvary at the foot of the Cross with John, the beloved disciple. John tells us, "When Jesus saw his mother, and the disciple whom he loved standing near, he said to his mother, 'Woman, behold your son.' Then he said to the disciple, 'Behold your mother'" (John 19: 26-27). Throughout the Church's history, numerous popes, theologians, and writers have confirmed their belief that here John is symbolic of all humanity. In other words, that Jesus from the Cross gave His Mother to every human person for all time.
Our Lord said, "Behold your mother." He was not suggesting that Mary become our mother, but that Mary is our Mother. And to Mary He gave us as children. But, if this is true, how do we make theological sense of this relationship? Turning again to Scripture, we can best understand it by considering St. Paul's beautiful doctrine of the Mystical Body of Christ (cf. Colossians 1:18, Ephesians 4:15). In this whole Body, St. Paul refers to Christ as the Head and the Church as the Body. Head and Body make up the entire and whole Mystical Body of Jesus Christ.
Now, if we say that Mary gave birth to Jesus, the Head of the Body, then it must be that she gave birth to the entire Body since a true body cannot be separated. Thus, it would mean that she gave birth to the members as well. In giving physical birth to Jesus, we can say that Mary made it possible for us to receive spiritual life through Him. We were dead, and through Him we have come back to life. And it was Mary's "yes" at the Annunciation that made our rebirth possible. To question this is to question the plan of God. For it was He who decided from all eternity that it would be so. And the list of those who have believed it is almost endless.
For it was He she who decided from all eternity 'Pope' Peter onward that it would be so.
And the list of those who have believed it is almost endless.
Nice...you got my point.