The month of May is the "month which the piety of the faithful has especially dedicated to Our Blessed Lady," and it is the occasion for a "moving tribute of faith and love which Catholics in every part of the world [pay] to the Queen of Heaven. During this month Christians, both in church and in the privacy of the home, offer up to Mary from their hearts an especially fervent and loving homage of prayer and veneration. In this month, too, the benefits of God's mercy come down to us from her throne in greater abundance" (Paul VI: Encyclical on the Month of May, no. 1).
This Christian custom of dedicating the month of May to the Blessed Virgin arose at the end of the 13th century. In this way, the Church was able to Christianize the secular feasts which were wont to take place at that time. In the 16th century, books appeared and fostered this devotion.
The practice became especially popular among the members of the Jesuit Order — by 1700 it took hold among their students at the Roman College and a bit later it was publicly practiced in the Gesu Church in Rome. From there, it spread to the whole Church.
Different countries celebrate Mary during May as well. In Japan, Catholics celebrate the Feast of Our Lady of Tsuwano on May 3, while the Polish celebrate the Blessed Mother as Queen of Poland on the same day. Maronite Catholics celebrate Our Blessed Mother of Miles May 16 and Peruvians celebrate Our Lady of Cuzco May 23.
The pious practice of honoring Mary during the month of May has been especially recommended by the Popes. Paul VI wrote a short encyclical in 1965 using the Month of Mary devotion as a means of obtaining prayers for peace. He urged the faithful to make use of this practice which is "gladdening and consoling" and by which the Blessed Virgin Mary is honored and the Christian people are enriched with spiritual gifts" (no. 2).
In May of 2002, Pope John Paul II said, "Today we begin the month dedicated to Our Lady a favourite of popular devotion. In accord with a long-standing tradition of devotion, parishes and families continue to make the month of May a 'Marian' month, celebrating it with many devout liturgical, catechetical and pastoral initiatives!"
Pope Francis’ April 28 Regina Coeli > Latin Marian Hymn for "Queen of Heaven" > catholicsun.org
Before closing this celebration, I would like to entrust to Our Lady the confirmands and all of you. The Virgin Mary teaches us what it means to live in the Holy Spirit and what it means to accept the news of God in our life. She conceived Jesus by the work of the Holy Spirit, and every Christian, each one of us, is called to accept the Word of God, to accept Jesus inside of us and then to bring him to everyone. Mary invoked the Holy Spirit with the Apostles in the Upper Room: we too, every time that we come together in prayer, are sustained by the spiritual presence of the Mother of Jesus, in order to receive the gift of the Spirit and to have the strength to witness to Jesus Risen. I say this in a special way to you who have received Confirmation today: may Mary help you to be attentive to what the Lord asks of you, and to live and walk forever with the Holy Spirit!
I would like to extend my affectionate greeting to all the pilgrims present from so many countries. I greet in particular the children who are preparing for Confirmation, the large group led by the Sisters of Charity, the faithful of several Polish parishes and those from Bisignano, as well as the Katholische akademische Verbindung Capitolina.
Now, in the light of Easter, the fruit of the Holy Spirit, we turn together to the Mother of the Lord.