0 To the Patriarchs, Primates, Archbishops, Bishops, and other Ordinaries in Peace and Communion with the Apostolic See. Venerable Brethren, Greeting and Apostolic Benediction. It is always with joyful expectation and inspired hope that We look forward to the return of the month of October. At Our exhortation and by Our express order this month has been consecrated to the Blessed Virgin, during which for some years now the devotion of her Rosary has been practised by Catholic nations throughout the world with sedulous earnestness. Our reasons for making this exhortation We have made known more than once. For as the disastrous condition of the Church and of Society proved to Us the extreme necessity for signal aid from God, it was manifest to Us that aid should be sought through the intercession of His Mother, and by the express means of the Rosary, which Christians have ever found to be of marvellous avail. This indeed has been well proved since the very institution of the devotion, both in the vindication of Holy Faith against the furious attacks of heresy, and in restoring to honour the virtues, which by reason of the Age's corruption, required to be rekindled and sustained. And this same proof was continued in all succeeding ages, by a never failing series of private and public benefits, whereof the illustrious remembrance is everywhere perpetuated and immortalized by monuments and existing institutions. Likewise in Our age, afflicted with that tempest of various evils, it is a joy to Our soul to relate the beneficent influence of the Rosary. Notwithstanding all this, you yourselves, Venerable Brethren, behold with your own eyes the persistence - nay, the increase - of the reasons for renewing again this year Our summons to the Faithful to turn with increased ardour in prayer to Mary, the Queen of Heaven. Besides, the more We fix Our thoughts upon the character of the Rosary, the clearer its excellence and power appear to Us. Hence, while Our wish increases that it may flourish, Our hope grows also that through Our recommendation it may come to be more greatly prized, its holy use become more extended and flourish abundantly. But We shall not now return to the various instructions which in past years We have given upon this subject. We shall take instead the opportunity of pointing out the particular ruling and designs of Providence which ordains that the Rosary should have new power to instil confidence into the hearts of those who pray, and new influence to move the compassionate heart of Our Mother to comfort and succour Us with the utmost bounty.
Source: Iucunda Semper Expectatione (Vatican.va)