Dominum et Vivificantem §51

⁵¹ All this is accomplished by the power of the Holy Spirit, and so is part of the great Jubilee to come. The Church cannot prepare for the Jubilee in any other way than in the Holy Spirit. What was accomplished by the power of the Holy Spirit "in the fullness of time" can only through the Spirit's power now emerge from the memory of the Church. By his power it can be made present in the new phase of man's history on earth: the year 2000 from the birth of Christ. The Holy Spirit, who with his power overshadowed the virginal body of Mary, bringing about in her the beginning of her divine Motherhood, at the same time made her heart perfectly obedient to that self-communication of God which surpassed every human idea and faculty. "Blessed is she who believed!" : thus Mary is greeted by her cousin Elizabeth, herself "full of the Holy Spirit." In the words of greeting addressed to her "who believed" we seem to detect a distant (but in fact very close) contrast with all those about whom Christ will say that "they do not believe." Mary entered the history of the salvation of the world through the obedience of faith. And faith, in its deepest essence, is the openness of the human heart to the gift: to God's self- communication in the Holy Spirit. St. Paul write: "The Lord is the Spirit, and where the Spirit of the Lord is, there is freedom." When the Triune; God opens himself to man in the Holy Spirit, this opening of God reveals and also gives to the human creature the fullness of freedom. This fullness was manifested in a sublime way precisely through the faith of Mary, through the "obedience of faith" : truly, "Blessed is she who believed!"