Mary is Necessary to God in the Sanctification of Souls by St. Louis de Montfort

If Moses, by the force of his prayer, stayed the anger of God against the Israelites in a manner so powerful that the most high and infinitely merciful Lord, being unable to resist him, told him to let Him alone that He might be angry with and punish that rebellious people, what must we note, with much greater reason, think of the prayer of the humble Mary, that worthy Mother of God, which is more powerful with His Majesty than the prayers and intercessions of all the angels and saints both in Heaven and on earth?

In the Heavens Mary commands the angels and the blessed. As a recompense for her profound humility, God has empowered her and commissioned her to fill with saints the empty thrones from which the apostate angels fell by pride. The will of the Most High, who exalts the humble (Lk. 1:52), is that Heaven, earth and Hell bend, with good will or bad will, to the commandments of the humble Mary, whom He has made sovereign of Heaven and earth, general of His armies, treasurer of His treasures, dispenser of His graces, worker of His greatest marvels, restorer of the human race, Mediatrix of men, the exterminator of the enemies of God, and the faithful companion of His grandeurs and triumphs.

God the Father wishes to have children by Mary till the consummation of the world; and He speaks to her these words "Dwell in Jacob" (Ecclus. 24:13); that is to say: Make your dwelling and residence in My predestined children, prefigured by Jacob, and not in the reprobate children of the devil, prefigured by Esau.

Just as in the natural and corporal generation of children there are a father and a mother, so in the supernatural and spiritual generation there are a Father, who is God, and a Mother, who is Mary. All the true children of God, the predestinate, have God for their Father and Mary for their Mother. He who has not Mary for his Mother has not God for his Father. This is the reason why the reprobate, such as heretics, schismatics and others, who hate our Blessed Lady or regard her with contempt and indifference, have not God for their Father, however much they boast of it, simply because they have not Mary for their Mother. For if they had her for their Mother, they would love and honor her as a true child naturally loves and honors the mother who has given him life.

The most infallible and indubitable sign by which we may distinguish a heretic, a man of bad doctrine, a reprobate, from one of the predestinate, is that the heretic and the reprobate have nothing but contempt and indifference for Our Lady, endeavoring by their words and examples to diminish the worship and love of her, openly or hiddenly, and sometimes by misrepresentation. Alas! God the Father has not told Mary to dwell in them, for they are Esaus.

Mary has produced, together with the Holy Ghost, the greatest thing which has been or ever will be--a God-Man; and she will consequently produce the greatest saints that there will be in the end of time. The formation and the education of the great saints who shall come at the end of the world are reserved for her. For it is only that singular and miraculous Virgin who can produce, in union with the Holy Ghost, singular and extraordinary things.

When the Holy Ghost, her Spouse, has found Mary in a soul, He flies there. He enters there in His fullness; He communicates Himself to that soul abundantly, and to the full extent to which it makes room for His spouse. Nay, one of the greatest reasons why the Holy Ghost does not now do startling wonders in our souls is because He does not find there a sufficiently great union with His faithful and inseparable spouse. I say "inseparable" spouse, because since that Substantial Love of the Father and the Son has espoused Mary, in order to produce Jesus Christ, the Head of the elect, and Jesus Christ in the elect, He has never repudiated her, because she has always been fruitful and faithful.

Mary is Necessary to Men:

In the second place we must conclude that, the most holy Virgin being necessary to God by a necessity which we call "hypothetical," in consequence of His will, she is far more necessary to men, in order that they may attain their last end. We must not confuse devotion to the Blessed Virgin with devotions to the other saints, as if devotion to her were not far more necessary than devotion to them, and as if devotion to her were a matter of supererogation.

"To be devout to Thee, O holy Virgin," says St. John Damascene, "is an arm of salvation which God gives to those whom He wishes to save."