0 ENCYCLICAL OF POPE PIUS XII ON PROCLAIMING THE QUEENSHIP OF MARY TO THE VENERABLE BRETHREN, THE PATRIARCHS, PRIMATES, ARCHBISHOPS, BISHIOPS, AND OTHER LOCAL ORDINARIES IN PEACE AND COMMUNION WITH THE HOLY SEE Venerable Brethren, Health and Apostolic Blessing. 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.
Source: Ad Caeli Reginam (Vatican.va)