“Nothing would please her better than to have you turn in fear from all
lofty things on which men set their hearts, seeing that even in His
mother God neither found nor desired anything of high degree.” — Martin Luther
“The two natures [in Christ] are so united in one Person that it is correct to say: “The mother of God is a virgin; God is born.” Since God and man are one Person, the properties characteristic of humanity alone are attributed to the deity; for the properties of the two natures are also united. Not to be born is also peculiar to the divine nature. In the Creed we pray and confess: “Who was conceived and who was born”—that is human; and “sits at the right hand”—that partakes of the divine, although it may also be human. Thus the Child who drinks His mother’s milk is eternal; He existed before the world’s beginning, and He created heaven and earth.” — Martin Luther
Today is the day in the Church Year set aside to remember and honor the Mother of our Lord, the Blessed Virgin Mary, who is properly called “Mother of God” because she was the chosen instrument through which the only-begotten Son of God, the Second Person of the Holy Trinity, took on human flesh, in her womb. Other Christian traditions have marked this day to honor Mary’s blessed death, her “dormition” as it is known in the Eastern churches. Rome, sadly, elevated pious speculations about Mary to the level of doctrine and declared this day to be the “Assumption of Mary” the belief that Mary did not die, but was instead translated to heaven without experiencing physical corruption. That there is precedent for this in the Scriptures is clear. We need think only of our Lord Jesus Christ Himself, or His servant the prophet Elijah, and probably Enoch. But we have no Scriptural warrant to believe that this happened to Mary.
Martin Luther, while clearly rejecting the excesses of Medieval Romanism when it came to Mary, elevating her to a position as an intermediary with Christ, retained a healthy devotion to our Blessed Lady, and we Lutherans need not let the dangers of Roman Mariology/Mariolatry dissuade us from appreciating the gift of Mary the Virgin and honoring the gifts given to her and through her, to us; namely, our Lord Jesus Christ.
Be sure to go check out the entire article, including the additional comments of Martin Luther regarding the Virgin Mary.