Let Mary’s soul be in each of you to proclaim the greatness of the Lord. Let her spirit be in each to rejoice in the Lord. Christ has only one mother in the flesh, but we all bring forth Christ in faith. Every soul receives the Word of God if only it keeps chaste, remaining pure and free from sin, its modesty undefiled. The soul that succeeds in this proclaims the greatness of the Lord, just as Mary’s soul magnified the Lord and her spirit rejoiced in God her Savior. In another place we read: Magnify the Lord with me. The Lord is magnified, not because the human voice can add anything to God but because he is magnified within us. Christ is the image of God, and if the soul does what is right and holy, it magnifies that image of God, in whose likeness it was created and, in magnifying the image of God, the soul has a share in its greatness and is exalted.
Saint Ambrose, From a commentary on Luke