Theotokos (Theotókos), Mother of God: the central title of Mariology

Theotókos, etymology and meaning

The Greek term Theotókos (Θεοτόκος) is composed of Theós (God) and tíktô (to beget, to give birth), meaning literally “she who bore God” or “Mother of God”. It is the highest and most disputed Marian title in Christian history, and its dogmatic definition at the Council of Ephesus (431) constitutes the founding moment of dogmatic Mariology. It is not primarily a title about Mary, but about Christ: in affirming that Mary is the Mother of God, the Church affirms that He who was born of her is truly God, not merely a man adopted by the divinity after birth.

From the patristic origin to the Council of Ephesus

The oldest documented use of Theotókos is found in Origen of Alexandria (third century), who employed it in an exegetical context. Athanasius of Alexandria (fourth century) popularized the title and defended it against the Arianizers, who resisted the Christological implications. The crisis broke out with Nestorius, bishop of Constantinople (428-431), who proposed replacing Theotókos with Christotókos (“Mother of Christ”) in order to avoid the confusion between the divine and human natures of Jesus. Cyril of Alexandria responded with twelve anathemas and convoked a council. At the Council of Ephesus (431), which met in the Basilica of Saint Mary, the bishops defined that Mary is truly Theotókos and deposed Nestorius. The people of Ephesus celebrated with torches in the streets.

Theotókos and contemporary Mariology

The definition of Theotókos at Ephesus is not merely a historical datum: it is the fundamental axiom of all Mariology. All the later Marian dogmas, the Perpetual Virginity, the Immaculate Conception (1854) and the Assumption (1950), presuppose and develop what is contained in Theotókos: Mary is the Mother of God made man, and her singular greatness derives exclusively from this divine motherhood. The Second Vatican Council (LG 53) confirmed: “Mary, by uniting herself as Mother to the mystery of Christ, obtained, by a special grace of God, a gift that surpasses everything”.

Contemporary ecumenism recognizes Theotókos as one of the few Marian titles shared by Catholicism, by Orthodoxy and by some Protestant traditions (Luther never rejected it). John Paul II, in Redemptoris Mater (1987), saw in Theotókos the foundation of the Marian dimension of the Church and the starting point of all ecumenical Mariology.

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The feast of Saint Mary, Mother of God

The Church celebrates the Solemnity of Saint Mary, Mother of God on January 1, the eighth day of Christmas – crowning the Christmas season with the title that sums up the whole mystery: the Son who is born of Mary is God Himself with us. It is also the first and oldest of the four Marian dogmas, the root of all the others.

Frequently Asked Questions

What does Theotokos mean?

It means “Mother of God”: it affirms that He whom Mary bore according to the flesh is truly God.

When was it defined that Mary is the Mother of God?

At the Council of Ephesus, in the year 431, against the position of Nestorius.

Does calling Mary “Mother of God” not make her equal to God?

No. It does not say that Mary is the origin of the divinity, but that she bore, in the flesh, the Son of God made man. It is an affirmation about Christ.

Learn what the Church teaches about Mary, Mediatrix of All Graces.

See also

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