" The reason why Mary became His Mother and why He did not come sooner was that she alone, and no creature before her or after her, was the pure Vessel of Grace, promised by God to mankind as the Mother of the Incarnate Word, by the merits of whose Passion mankind was to be redeemed from its guilt. The Blessed Virgin was the one and only pure blossom of the human race, flowering in the fullness of time. All the children of God from the beginning of time who have striven after salvation contributed to her coming. She was the only pure gold of the whole earth. She alone was the pure immaculate flesh and blood of the whole human race, prepared and purified and ordained and consecrated through all the generations of her ancestors, guided, guarded, and fortified by the Law until she came forth as the fullness of Grace. She was pre-ordained in eternity and passed through time as the Mother of the Eternal. "

― Anne Catherine Emmerich , The Life of the Blessed Virgin Mary: From the Visions of Ven. Anne Catherine Emmerich