Nestorius began to defend his priest Anastasius, who had preached that the Holy Virgin should not be called Mother of God, for since she was human she could not bear God. This gave offense to all Christians and they took no other meaning from it than that he held that Christ, born of Mary, was not God, but a mere man, like all of us; and out of this there arose such a state of affairs that the emperor had to call a council to help things. . . .
Moreover, he admitted that Christ, God’s Son, was born of the Virgin Mary according to His humanity, not according to His divinity, as we, and all Christians, also say. But there he struck a difficulty. He would not have it that Mary should be called, on that account, mother of God, since Christ was not born of her according to His divinity; or, to speak plainly, he believed that Christ did not have His deity from her, as He had His humanity. . . .
We, too, know very well that Christ did not derive His deity from Mary; but it does not follow that it must, therefore, be false to say, “God was born of Mary” and “God is Mary’s Son” and “Mary is God’s mother.” I must give you a plain illustration. If a woman bears a child, a worthless Nestorius . . . can be proud and ignorant, and raise the quibble, “This woman has borne the child, but she is not its mother, for the reason that the soul of the child is not of her nature or blood, but is infused from elsewhere, i.e., from God.
Therefore, this child is, indeed, born of the woman according to the body; but since its soul is not from her body, she is not the child’s mother, because she is not the mother of its soul.” Such a wretched sophist does not deny that the two natures, body and soul, are one person; nor does he say that there are two persons, or two children; but he confesses that two natures, body and soul, are one person, or one child, and that the mother has borne not two children, but one; but he does not see what he is denying or what he is saying.
The sophist says correctly, on one point, that the mother cannot bear, or give, the child’s soul, but it is not to be endured when he says that the child is not the mother’s natural child and the mother not the child’s natural mother. . . . He who admits that a mother has borne a child, which is both body and soul, ought also to say and believe that the mother has borne the whole child, and is its mother, even though she may not be the mother of its soul. . . .
It should, therefore, be said that Mary is the true, natural mother of the child called Jesus Christ, and the true mother and bearer of God. Thus whatever else can be said of children’s mothers can be said of her; they suckle their children, bathe them, give them food and drink, and Mary suckled God, rocked God, made broth and soup for God. For God and man are one Person, one Christ, one Son, one Jesus, not two persons, not two Christs, not two sons, not two Jesuses; just as your son is not two sons, two Hanses, two shoemakers, etc., even though he has two natures, body and soul, body from you, soul from God alone.
(On the Councils and the Churches, March 1539; translated by C. M. Jacobs; paragraph breaks added)
Photo credit: Madonna and Child (c. 1416), by Fra Bartolomeo (1472-1517) [public domain / Wikimedia Commons]