There has never been, and there will never be, either in Gods creation or in his mind, a mere creature in whom he is so honored as he is in the Blessed Virgin Mary. Not all the the saints together, nor all the cherubim and the highest seraphim in heaven, can equal the glory bestowed upon the soul of the Blessed Virgin Mary. This is because her soul was singularly created to be the vessel of the Holy Spirit. Mary is Gods garden of Paradise. She his own unspeakable world, into which his Son entered to do wonderful things: to tend it, to perfect it, and to take his delight in it.
God created a world for the way-farer, that is the one we are living in now. He created a second world, Heaven, which is not only very real, but it has most certainly existed from beginning of the creation. What it consists in is unimaginable to men on earth, but it is certain that the Angels and the Saints will occupy it in perfect happiness for all eternity with God.
God created a third, spiritual world for himself: which he named Mary. She is a spiritual world unknown to most mortals here on earth. No one can begin to fathom the depth, or the beauty, or the power, or the complexity of the spirit of even an angel, like a Cherubim or Seraphim. It is even more impossible for men to comprehend the unfathomable perfections of the soul of Mary, or the soul of Christ. Christ is one person with the Eternal Word in all its fullness, while Mary is the Bride of the Holy Spirit. Because the Holy Spirit dwells within her in all his plenitude, her soul is a true City of God. She is the true New Jerusalem in whom God dwells in his fullness: coming down from heaven like a beautiful bride adorned for her husband. (Rev. 21:2)
Even the angels and saints in heaven find the depth, and breadth, and beauty of the the virtues of the soul of Mary incomprehensible. They remain in a state of holy, perpetual awe at the exquisite perfections of the seemingly infinite virtues of her soul. Her soul is the most perfect living image of God after Christs own soul. The Soul of Christ is one person with the Eternal Divine Word. Marys soul was created singularly to be the primary vessel of the Holy Spirit. God exalted Mary so far above the angels, and so vast and incomprehensible is her being, that God has called her his chosen world. Upon seeing Mary, all of heaven exclaims: Holy, holy, holy. Marys being is exalted above every other being, except for Jesus Christ himself. Though all of Gods universe was created for Christ, Mary was singularly created to be the most dearly beloved created companion for Christ. Thus, her soul, as the singular vessel of the Holy Spirit, is a divine mirror of the splendor of Christs own. Those who despise Mary are bound by invincible ignorance. They have no idea who, or what they are resisting. Her soul contains the fullness of the glory of the Holy Spirit, and her being is exalted by grace to the right hand of Christ himself.
The Secret of Mary, By Saint Louis DeMontfort, 19
Before I knew it, my heart had made me the blessed one of my kinswomen.
Song of Songs 6:12