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."

Necessity of The Blessed Virgin and of Devotion to Her, by St. Louis de Montfort

I avow, with all the Church, that Mary, being a mere creature that has come from the hands of the Most High, is in comparison with His Infinite Majesty less than an atom; or rather, she is nothing at all, because only He is "He who is" (Exod. 3:14); consequently that grand Lord, always independent and sufficient to Himself, never had, and has not now, any absolute need of the holy Virgin for the accomplishment of His will and for the manifestation of His glory. He has but to will in order to do everything.

Nevertheless, I say that, things being as they are now--that is, God having willed to commence and to complete His greatest works by the most holy Virgin ever since He created Her--we may well think He will not change His conduct in the eternal ages; for He is God, and he changes not, either in His sentiments or in His conduct.

Mary Was Necessary to God in the Incarnation of The Word:

It was only through Mary that God the Father gave His Only-begotten to the world. Whatever sighs the patriarchs may have sent forth, whatever prayers the prophets and the saints of the Old Law may have offered up to obtain this treasure for full "four thousand years", it was only "Mary" who merited it and found grace before God (Lk. 1:30) by the force of her prayers and the eminence of her virtues. The world was unworthy, says St. Augustine, to receive the Son of God directly from the Father's hands. He gave Him to Mary in order that the world might receive Him through her.

The Son of God became man for our salvation; but it was in Mary and by Mary. God the Holy Ghost formed Jesus Christ in Mary; but it was only after having asked her consent by one of the first ministers of His court.

God the Father communicated to Mary His fruitfulness, inasmuch as a mere creature was capable of it, in order that He might give her the power to produce His Son and all the members of His Mystical Body.

God the Son descended into her virginal womb as the New Adam into His terrestrial paradise, to take His pleasure there, and to work in secret marvels of grace.

God made Man found His liberty in seeing Himself imprisoned in her womb. He made His omnipotence shine forth in letting Himself be carried by that humble maiden. He found His glory and His Father's in hiding His splendors from all creatures here below, and revealing them to Mary only. He glorified His independence and His majesty in depending on that sweet Virgin in His conception, in His birth, in His presentation in the temple, in His hidden life of thirty years, and even in His death, where she was to be present in order that He might make with her but one same sacrifice and be immolated to the Eternal Father by her consent, just as Isaac of old was offered by Abraham's consent to the will of God. It is she who nourished Him, supported Him, brought Him up and then sacrificed Him for us.

Oh, admirable and incomprehensible dependence of God, which the Holy Ghost could not pass over in silence in the Gospel, although He has hidden from us nearly all the admirable things which the Incarnate Wisdom did in His hidden life--as if He would enable us, by His revelation of that at least, to understand something of its excellence and infinite glory! Jesus Christ gave more glory to God the Father by submission to His Mother during those thirty years than He would have given Him in converting the whole world by working of the most stupendous miracles. Oh, how highly we glorify God when, to please Him, we submit ourselves to Mary, after the example of Jesus Christ, our sole Exemplar!

If we examine closely the rest of our Blessed Lord's life, we shall see that it was His will to begin His miracles by Mary. He sanctified St. John in the womb of his mother, St. Elizabeth, but it was by Mary's word. No sooner had she spoken than John was sanctified; and this was His first miracle of grace.

At the marriage of Cana He changed the water into wine, but it was at Mary's humble prayer; and this was His first miracle of nature. He began and continued His miracles by Mary, and He will continue them to the end of ages by Mary.

God the Holy Ghost, being barren in God--that is to say, not producing another Divine Person--is become fruitful by Mary, whom He has espoused. It was with her, in her, and of her that He produced His Masterpiece, which is God made Man, and that He goes on producing daily, to the end of the world, the predestinate and the members of the Body of that adorable Head. This is the reason why He, the Holy Ghost, the more He finds Mary, His dear and inseparable spouse, in any soul, the more active and mighty He becomes in producing Jesus Christ in that soul, and that soul in Jesus Christ.

It is not that we mean that our Blessed Lady gives the Holy Ghost His fruitfulness, as if He had it not Himself. For inasmuch as He is God, He has the same fruitfulness or capacity of producing as the Father and the Son; only He does not bring it into action, as He does not produce another Divine Person. But what we mean is that the Holy Ghost chose to make use of our Blessed Lady, though He had no absolute need of her, to bring His fruitfulness into action, by producing in her and by her Jesus Christ and His members--a mystery of grace unknown to even the wisest and most spiritual among Christians. (True Devotion to Mary #14-21, by St. Louis de Montfort)