Now consider that God would be born of this holy Virgin in three ways, in her spirit, in her soul, and in her body. And she was not so blessed by the birth in her body as by that in her spirit, as Saint Augustine says; and as our Lord in the Gospel answered the women who said “Blessed is the womb that bore you”… But he said: “Yes rather, blessed are they who hear the Word of God and keep it” (Lk 11:27-28). Therefore had she first conceived and brought forth God in her spirit. By her purity she pleased God well; by her humility she prepared him a fit dwelling place; by her love did she constrain God to descend into the depths of her spirit, a place all restful in the quiet silence of perfect detachment from created things. There did God unite her spirit to his, there did he utter to her his hidden Word, begetting his only begotten with unspeakable joy and love. This is the eternal generation in Mary; this is the obscure night of the spirit wherein the darkness of the human intelligence receives the dawning of the uncreated brightness. Because where the divine light shines, no created light can remain, for the night is changed into day. That means that the created light of the soul is changed into the uncreated light of eternity. Thus it happened that Mary gave over her spirit into the uncreated being of the Godhead, and her soul sank away into the depths of humility.
And now she drew down into her soul the all-lovely sweet streams of the light of eternal wisdom; for as the Father brought forth his only begotten Son in her soul, he in turn new-formed her in himself. The Father willed that she should consent that his Only Begotten Son should assume human nature, and should be born of her in bodily form by the act of the Holy Spirit…
Instantly she was encircled and enshrined in the light of the Holy Trinity, and penetrated through and through with the divine glory; the arrows of divine love pierced her soul to its inmost depths; and thus was she made willing to be the Mother of God