8 Nothing seems more appropriate and valuable to Us than to have the prayers of the whole Christian family rise to the Mother of God, who is invoked as the Queen of Peace, begging her to pour forth abundant gifts of her maternal goodness in midst of so many great trials and hardships. We want constant and devout prayers to be offered to her whom We declared Mother of the Church, its spiritual parent, during the celebration of the Second Vatican Council, thereby winning the applause of the Fathers and of the Catholic world, and confirming a point of traditional doctrine. For the Mother of the Savior is, as St. Augustine teaches, "surely the mother of His members," (7) and St. Anselm, to mention only one other, agrees with him in these words: "What could ever be deemed more suitable than for you to be the mother of those whose father and brother Christ deigned to become?" (8) She was called "most truly the mother of the Church" by Our predecessor Leo XIII. (9) Hence We have good reason to place our trust in her in the midst of this terrible disorder.
Source: Christi Matri (Vatican.va)