Mary alone found grace before God without the help of any other creature. All those who have since found grace before God have found it only through her. She was full of grace when she was greeted by the Archangel Gabriel and was filled with grace to overflowing by the Holy Spirit when he so mysteriously overshadowed her. From day to day, from moment to moment, she increased so much this twofold plenitude that she attained an immense and inconceivable degree of grace. So much so, that the Almighty made her the sole custodian of his treasures and the sole dispenser of his graces. She can now ennoble, exalt and enrich al she chooses. She can lead them along the narrow path to heaven and guide them through the narrow gate to life. She can give a royal throne, sceptre and crown to whom she wishes. Jesus is always and everywhere the genuine tree that bears that Fruit of life, the true Mother who bears that Son.
To Mary alone God gave the keys of the cellars of divine love and the ability to enter the most sublime and secret ways of perfection, and lead others along them. Mary alone gives to the unfortunate children of unfaithful Eve entry into that earthly paradise where they may walk pleasantly with God and be safely hidden from their enemies. There they can feed without fear of death on the delicious fruit of the tree of life and the tree of the knowledge of good and evil. They can drink copiously the heavenly waters of that beauteous fountain which gushes forth in such abundance. As she is herself the earthly paradise, that virgin and blessed land from which sinful Adam and Eve were expelled she lets only those whom she chooses enter her domain in order to make them saints.
St. Louis De Montfort