Thomas Aquinas - Summa Theologica, Part III (Tertia Pars)

Reply Obj. 3: Nativity regards the person as its subject, the nature as its terminus. Now, it is possible for several transformations to be in the same subject: yet must they be diversified in respect of their termini. But we do not say this as though the eternal nativity were a transformation or a movement, but because it is designated by way of a transformation or movement.

Reply Obj. 4: Christ can be said to have been born twice in respect of His two nativities. For just as he is said to run twice who runs at two different times, so can He be said to be born twice who is born once from eternity and once in time: because eternity and time differ much more than two different times, although each signifies a measure of duration. _______________________

THIRD ARTICLE [III, Q. 35, Art. 3]

Whether the Blessed Virgin Can Be Called Christ's Mother in Respect of His Temporal Nativity?

Objection 1: It would seem that the Blessed Virgin cannot be called Christ's Mother in respect of His temporal nativity. For, as stated above (Q. 32, A. 4), the Blessed Virgin Mary did not cooperate actively in begetting Christ, but merely supplied the matter. But this does not seem sufficient to make her His Mother: otherwise wood might be called the mother of the bed or bench. Therefore it seems that the Blessed Virgin cannot be called the Mother of Christ.

Obj. 2: Further, Christ was born miraculously of the Blessed Virgin.

But a miraculous begetting does not suffice for motherhood or

sonship: for we do not speak of Eve as being the daughter of Adam.

Therefore neither should Christ be called the Son of the Blessed

Virgin.

Obj. 3: Further, motherhood seems to imply partial separation of the semen. But, as Damascene says (De Fide Orth. iii), "Christ's body was formed, not by a seminal process, but by the operation of the Holy Ghost." Therefore it seems that the Blessed Virgin should not be called the Mother of Christ.

On the contrary, It is written (Matt. 1:18): "The generation of Christ was in this wise. When His Mother Mary was espoused to Joseph," etc.

I answer that, The Blessed Virgin Mary is in truth and by nature the Mother of Christ. For, as we have said above (Q. 5, A. 2; Q. 31, A. 5), Christ's body was not brought down from heaven, as the heretic Valentine maintained, but was taken from the Virgin Mother, and formed from her purest blood. And this is all that is required for motherhood, as has been made clear above (Q. 31, A. 5; Q. 32, A. 4). Therefore the Blessed Virgin is truly Christ's Mother.

Reply Obj. 1: As stated above (Q. 32, A. 3), not every generation implies fatherhood or motherhood and sonship, but only the generation of living things. Consequently when inanimate things are made from some matter, the relationship of motherhood and sonship does not follow from this, but only in the generation of living things, which is properly called nativity.

Reply Obj. 2: As Damascene says (De Fide Orth. iii): "The temporal nativity by which Christ was born for our salvation is, in a way, natural, since a Man was born of a woman, and after the due lapse of time from His conception: but it is also supernatural, because He was begotten, not of seed, but of the Holy Ghost and the Blessed Virgin, above the law of conception." Thus, then, on the part of the mother, this nativity was natural, but on the part of the operation of the Holy Ghost it was supernatural. Therefore the Blessed Virgin is the true and natural Mother of Christ.

Reply Obj. 3: As stated above (Q. 31, A. 5, ad 3; Q. 32, A. 4), the resolution of the woman's semen is not necessary for conception; neither, therefore, is it required for motherhood. _______________________

FOURTH ARTICLE [III, Q. 35, Art. 4]

Whether the Blessed Virgin should be called the Mother of God?

Objection 1: It would seem that the Blessed Virgin should not be called the Mother of God. For in the Divine mysteries we should not make any assertion that is not taken from Holy Scripture. But we read nowhere in Holy Scripture that she is the mother or parent of God, but that she is the "mother of Christ" or of "the Child," as may be seen from Matt. 1:18. Therefore we should not say that the Blessed Virgin is the Mother of God.

Obj. 2: Further, Christ is called God in respect of His Divine

Nature. But the Divine Nature did not first originate from the

Virgin. Therefore the Blessed Virgin should not be called the Mother

of God.

Obj. 3: Further, the word "God" is predicated in common of Father,

Son, and Holy Ghost. If, therefore, the Blessed Virgin is Mother of

God it seems to follow that she was the Mother of Father, Son, and

Holy Ghost, which cannot be allowed. Therefore the Blessed Virgin

should not be called Mother of God.

On the contrary, In the chapters of Cyril, approved in the Council of Ephesus (P. 1, Cap. xxvi), we read: "If anyone confess not that the Emmanuel is truly God, and that for this reason the Holy Virgin is the Mother of God, since she begot of her flesh the Word of God made flesh, let him be anathema."

I answer that, As stated above (Q. 16, A. 1), every word that signifies a nature in the concrete can stand for any hypostasis of that nature. Now, since the union of the Incarnation took place in the hypostasis, as above stated (Q. 2, A. 3), it is manifest that this word "God" can stand for the hypostasis, having a human and a Divine nature. Therefore whatever belongs to the Divine and to the human nature can be attributed to that Person: both when a word is employed to stand for it, signifying the Divine Nature, and when a word is used signifying the human nature. Now, conception and birth are attributed to the person and hypostasis in respect of that nature in which it is conceived and born. Since, therefore, the human nature was taken by the Divine Person in the very beginning of the conception, as stated above (Q. 33, A. 3), it follows that it can be truly said that God was conceived and born of the Virgin. Now from this is a woman called a man's mother, that she conceived him and gave birth to him. Therefore the Blessed Virgin is truly called the Mother of God. For the only way in which it could be denied that the Blessed Virgin is the Mother of God would be either if the humanity were first subject to conception and birth, before this man were the Son of God, as Photinus said; or if the humanity were not assumed unto unity of the Person or hypostasis of the Word of God, as Nestorius maintained. But both of these are erroneous. Therefore it is heretical to deny that the Blessed Virgin is the Mother of God.

Reply Obj. 1: This was an argument of Nestorius, and it is solved by saying that, although we do not find it said expressly in Scripture that the Blessed Virgin is the Mother of God, yet we do find it expressly said in Scripture that "Jesus Christ is true God," as may be seen 1 John 5:20, and that the Blessed Virgin is the "Mother of Jesus Christ," which is clearly expressed Matt. 1:18. Therefore, from the words of Scripture it follows of necessity that she is the Mother of God.

Again, it is written (Rom. 9:5) that Christ is of the Jews "according to the flesh, who is over all things, God blessed for ever." But He is not of the Jews except through the Blessed Virgin. Therefore He who is "above all things, God blessed for ever," is truly born of the Blessed Virgin as of His Mother.

Reply Obj. 2: This was an argument of Nestorius. But Cyril, in a letter against Nestorius [*Cf. Acta Conc. Ephes., p. 1, cap. ii], answers it thus: "Just as when a man's soul is born with its body, they are considered as one being: and if anyone wish to say that the mother of the flesh is not the mother of the soul, he says too much. Something like this may be perceived in the generation of Christ. For the Word of God was born of the substance of God the Father: but because He took flesh, we must of necessity confess that in the flesh He was born of a woman." Consequently we must say that the Blessed Virgin is called the Mother of God, not as though she were the Mother of the Godhead, but because she is the mother, according to His human nature, of the Person who has both the divine and the human nature.