From the earliest ages of the Catholic Church a Christian people, whether in time of triumph or more especially in time of crisis, has addressed prayers of petition and hymns of praise and veneration to the Queen of Heaven. And never has that hope wavered which they placed in the Mother of the Divine King, Jesus Christ; nor has that faith ever failed by which we are taught that Mary, the Virgin Mother of God, reigns with a mother’s solicitude over the entire world, just as she is crowned in heavenly blessedness with the glory of a Queen.

Following upon the frightful calamities which before Our very eyes have reduced flourishing cities, towns, and villages to ruins, We see to Our sorrow that many great moral evils are being spread abroad in what may be described as a violent flood. Occasionally We behold justice giving way; and, on the one hand and the other, the victory of the powers of corruption. The threat of this fearful crisis fills Us with a great anguish, and so with confidence We have recourse to Mary Our Queen, making known to her those sentiments of filial reverence which are not Ours alone, but which belong to all those who glory in the name of Christian. . . .

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’.” – from Ad Caeli Reginam (1954)