Novenas derive their effectiveness from the first historical novena in the history of the Church: the one that the apostles made at Christ's request between the Ascension and Pentecost: "Remain in the city until you are clothed with power from on high" (Lk 24:49). On the tenth day Pentecost took place, and "they were all filled with the Holy Spirit" (Acts 2:4).
The novenas to Mary Undoer of Knots are very powerful. Testimonials abound, sent by mail and on the official website of Mary Undoer of Knots, attesting to both the granting of requests and often to the speed at which graces are received.
There are several reasons for the extraordinary power of this novena. The decision to make a novena is a recognition of one's own powerlessness without recourse to supernatural help: in this way, it represents an act of humility, which opens the way to spiritual gifts.
In addition, the novena begins, on the first day, with an act of contrition, and recommends that the person receive the sacrament of reconciliation, which allows her to accept responsibility in the knot that she is asking to be undone.
The daily meditations invoke Mary under her various names: "New Eve and Most Pure Virgin" (first day), "Filled with Grace and Lady of Beautiful Love" (second day), "Handmaid of the Lord and Lady of Holy Hope" (third day), "Mediatrix of all graces and Mother of God"(eighth day), and on the ninth day, by Our Lady's favorite title, "Mother of God and Our Mother".
Finally, the novena makes use of the Rosary. In nine days, the person who prays the novena has time to contemplate all twenty mysteries of the Rosary twice, since the novena asks that we pray five decades or mysteries each day.
Isabelle Rolland. Marie qui défait les nœuds. D’un “miracle conjugal” à une dévotion universelle (Mary Undoer of Knots: From a "marital miracle" to a universal devotion). MDN 2022