Mary Mediatrix of all Graces
Traditionally, today is the feast of Mary, Mediatrix of All Graces. All the graces which flow from the redemption of Jesus Christ are granted to the human family through the motherly intercession of Mary. Mary mediated Jesus Christ, the Author of all graces, to the world when she agreed to be the human mother of God made man (cf. Lk 1:38). And from the cross at Calvary (Jn 19:26) and as the final gift to humanity, Jesus gives Mary as a spiritual mother to us all: “Son, behold your mother” (cf. Jn 19:26). For this reason, Vatican II refers to Mary as a “mother to us in the order of grace ” (Lumen Gentium, n. 62) and several twentieth century popes have officially taught the doctrine of Mary as Mediatrix of all graces, quoting the words of St Bernard: “It is the will of God that we obtain all favours through Mary.” The Mediatrix performs this task in intimate union with the Holy Spirit, the Sanctifier, with whom she began the drama of our Lord’s Redemption at the Annunciation (cf. Lk. 1:35).
Thirdly, Mary is our Advocate for people of God, in that she takes the petitions of her earthly children, especially in times of difficulties, and brings them through her maternal intercession before her Son and our Lord Jesus.
In the Old Testament, the Queen Mother brought the petitioned needs of the people of Israel to the throne of her son the king (cf. 1 Kings 2:19). Now Mary is the new Queen Mother and Advocate in the new Kingdom of her Son, who brings the petitioned needs of the people of God to the throne of her glorious Son, Christ the King, particularly in our present difficult times.
The universal mediation of the Mother of Jesus as Coredemptrix, Mediatrix of all graces, and Advocate for the people of God is already contained in the official and authoritative teachings of the Church’s Magisterium. Now, at the summit of the Marian era, what remains is the final proclamation by the Church of this final Marian doctrine as Christian dogma revealed by God.
For more information, read this article by Fr. William G. Most.