35. But the Blessed Virgin Mary should be called Queen, not only because of her Divine Motherhood, but also because God has willed her to have an exceptional role in the work of our eternal salvation. “What more joyful, what sweeter thought can we have” – as Our Predecessor of happy memory, Pius XI wrote – “than that Christ is our King not only by natural right, but also by an acquired right: that which He won by the redemption? Would that all men, now forgetful of how much we cost Our Savior, might recall to mind the words, ‘You were redeemed, not with gold or silver which perishes, . . . but with the precious blood of Christ, as of a Lamb spotless and undefiled. We belong not to ourselves now, since Christ has bought us ‘at a great price’.”
36. Now, in the accomplishing of this work of redemption, the Blessed Virgin Mary was most closely associated with Christ; and so it is fitting to sing in the sacred liturgy: “Near the cross of Our Lord Jesus Christ there stood, sorrowful, the Blessed Mary, Queen of Heaven and Queen of the World.”[46] Hence, as the devout disciple of St. Anselm (Eadmer, ed.) wrote in the Middle Ages: “just as . . . God, by making all through His power, is Father and Lord of all, so the blessed Mary, by repairing all through her merits, is Mother and Queen of all; for God is the Lord of all things, because by His command He establishes each of them in its own nature, and Mary is the Queen of all things, because she restores each to its original dignity through the grace which she merited.
37. For “just as Christ, because He redeemed us, is our Lord and king by a special title, so the Blessed Virgin also (is our queen), on account of the unique manner in which she assisted in our redemption, by giving of her own substance, by freely offering Him for us, by her singular desire and petition for, and active interest in, our salvation.”. . .
46. From the ancient Christian documents, from prayers of the liturgy, from the innate piety of the Christian people, from works of art, from every side We have gathered witnesses to the regal dignity of the Virgin Mother of God; We have likewise shown that the arguments deduced by Sacred Theology from the treasure store of the faith fully confirm this truth. Such a wealth of witnesses makes up a resounding chorus which changes the sublimity of the royal dignity of the Mother of God and of men, to whom every creature is subject, who is “exalted to the heavenly throne, above the choirs of angels.”[61]
47. Since we are convinced, after long and serious reflection, that great good will accrue to the Church if this solidly established truth shines forth more clearly to all, like a luminous lamp raised aloft, by Our Apostolic authority We decree and establish the feast of Mary’s Queenship, which is to be celebrated every year in the whole world on the 31st of May. We likewise ordain that on the same day the consecration of the human race to the Immaculate Heart of the Blessed Virgin Mary be renewed, cherishing the hope that through such consecration a new era may begin, joyous in Christian peace and in the triumph of religion.
48. Let all, therefore, try to approach with greater trust the throne of grace and mercy of our Queen and Mother, and beg for strength in adversity, light in darkness, consolation in sorrow; above all let them strive to free themselves from the slavery of sin and offer an unceasing homage, filled with filial loyalty, to their Queenly Mother.. . .
Venerable Pope Pius XII
Ad Caeli Reginam