" With one heart all these joined constantly in prayer, together with some women, including Mary the mother of Jesus, and with his brothers.(Acts 1: 14)
Mary was over-shadowed by the Holy Spirit at the incarnation of the Son of God. She was present with the Disciples of Christ at Pentecost. With them, she was filled again with the Holy Spirit. With this gift, Mary was led to the fullness of the truth about her Son and his mission.
Leo XIII wrote in his Encyclical, Adiutricem Populi, of September 5, 1895,"With a generous heart Mary undertook and discharged the duties of her high but laborious office, the beginnings of which were consecrated in the Cenacle. With wonderful care she nurtured the first Christians by her holy example, her authoritative counsel, her sweet consolation, her fruitful prayers. She was, in very truth, the Mother of the Church, the teacher and queen of the Apostles, to whom, besides, she confided no small part of the divine mysteries which she kept in her heart."