Saint Anne was the inner sanctuary in which was formed the living tabernacle which was to house the Son of God made Man. The solemn definition of the dogma of the Immaculate Conception provides us with even greater insight into the wonderful dignity of Saint Anne.
The Immaculate Conception of the Blessed Virgin Mary took place in the womb of Saint Anne, thus making it her own, just as the Incarnation of the God-Man by the power of the Holy Ghost took place within the chaste womb of Mary. Of course, the difference between the two is great, but there is a close parallel: the Immaculate Mother who was to be the Mother of God was formed of the flesh and blood of Saint Anne, as the God-Man was formed of the flesh and blood of Mary. In both cases, the Holy Ghost entered in and worked a tremendous miracle of grace.
At the moment of Conception, Saint Anne and Saint Joachim gave to Mary, who soon would transmit them to Jesus, the flesh and blood which they had received from their forefathers. But this flesh and this blood which they had received soiled by Original Sin, they handed on to their child without any stain. Bossuet could say: "The Conception of Mary (in which Anne and Joachim took part) is the first and original source of the Blood of Jesus, which flows in our veins through the Sacraments, and which brings the breath of life to every part of the Mystical Body of Christ – the Church."
The Blessed Virgin Mary was Immaculate at her Conception; and in consequence, her father and mother were the ministers of God in accomplishing a work which will remain unique forever in the history of mankind.
There we see the basis for the glory of Saint Anne. To create angels and men, the Blessed Trinity, so to speak, sought no assistance from outside Itself. In accomplishing the Immaculate Conception, that same Blessed Trinity summoned to its aid the two who would be the mother and father of the Blessed Virgin. By that act, there was conferred upon them a character of singular grandeur.
We cannot speak of the Incarnate Word without at the same time mentioning her whom God chose to be His Mother. Failing to do so, as the Fathers of the Church prove, opens the door to heretical attacks upon the very Person of Christ. So too, to speak of the Immaculate Conception without mentioning Saint Anne, who so wonderfully participated in this admirable creation, would be to minimize the dignity and grandeur of the Mother of God.