Overview
Despite Luther's harsh polemics against his Roman Catholic opponents over issues concerning Mary and the saints, theologians appear to agree that Luther adhered to the Marian decrees of the ecumenical councils and dogmas of the church. He held fast to the belief that Mary was a perpetual virgin and the Theotokos or Mother of God. Special attention is given to the assertion that Luther, some three-hundred years before the dogmatization of the Immaculate Conception by Pope Pius IX in 1854, was a firm adherent of that view. Others maintain that Luther in later years changed his position on the Immaculate Conception, which at that time was undefined in the Church; however, he maintained belief in Mary's lifelong sinlessness. Regarding the Assumption of Mary, he stated, that the Bible did not say anything about it. Important to him was the belief that Mary and the saints do live on after death.
The centerpiece of Luther's Marian views was his 1521 Commentary on the Magnificat in which he extolled the magnitude of God's grace toward Mary and her own legacy of Christian instruction and example demonstrated in her canticle of praise. Through 490 years this canticle has had an important place in Lutheran liturgy.
Read more about this topic: Lutheran Marian Theology