Mary Immaculate
Mary is Mother of the Church
Mary is Mother of the Church because, in virtue of the ineffable election of the Eternal Father himself (cf. LG, 56) and under the special action of the Spirit of Love, she gave human life to the Son of God, "For whom and through whom everything exists" (Heb 2:10) and from whom the whole of God's people receives the grace and dignity of his election. His own Son has explicitly willed to extend the maternity of his Mother -and extend it in a way easily accessible to all the souls and all the hearts- by giving her from up above on the Cross his beloved disciple as her son (St. John 19: 26).
The Holy Spirit suggested to her to remain also in the Cenacle after the Ascension of Our Lord, recollected in prayer and expectation along with the Apostles, until the day of the Pentecost, day when the Church, coming out from obscurity, was to be born in a visible way (cf. Acts 1:14).
And since then, all the generations of faithful and all those who render testimony to Christ and love him, as John the Apostle, welcome spiritually within their homes (cf. St. John 19:27) this Mother, who thus happens to be, since the beginning, that is, since the moment of the Annunciation, inserted in the history of salvation and the mission of the Church.
John Paul II