Apophasis, or is it Nestorious, I understand perfectly well what you say. It’s not what I want to believe you have said, or maybe you don’t really know what you’re saying.

What I have retained above outlines your entire position: You claim that Mary is the mother of only Jesus’ human nature (his humanity), she is not the mother of one person, Jesus, who has both a divine and human nature. Mothers bear persons, not natures, unless there were two persons - one human and one divine - co-habiting the body of the historical Jesus. This claim is heretical: Nestorianism is a fifth century heresy claiming that there are two distinct persons in the incarnate Christ, one human and one divine. (This form resolves the problem of having a single hybrid being.) The Catholic Church teaches that Christ was and is a divine person who took on a human nature; He did not take on divinity when Mary bore him:
“THE CHILD TO BE BORN WILL BE CALLED HOLY, THE SON OF GOD.” {LUKE 1:35)
GOD SENT HIS SON, BORN OF A WOMAN { GALATIANS 4:4 }
Nestorious contended that Mary could not really have been the mother of God, but only the mother of a human being conjoined to God. (For mothers bear persons.) She was the mother of only a full human being conjoined with a full divine being co-habiting one body. The Council of Ephesus condemned the bishop’s heresy in 431 A.D. ( 2 Pet 3:16).
What you have to say above about “the mystery of the hypostatic union” is in accord with Catholic dogma. But it does not support your claim that Mary is only the biological mother of the human nature of Christ and not the mother of one person with two natures. Basically, the question is this: Is Mary the mother of only the human nature of Christ, or is she the mother of the single person of Christ with two natures? Since her motherhood of Jesus is not merely biological - she had a maternal relationship with the divine person Jesus - she is the mother of the Person, not merely the biological mother of his human nature. Let’s not conclude that there were two “full” persons existing together in one body. That is what Nestorious heretically concluded to get rid of the hybrid being. He constructed a human being while preserving a divine being who had entered the world, distorting the Gospel of John:
THE WORD BECAME FLESH. { JOHN 1:14 }
He did not take on divinity, but took on a human nature as one distinct person “born” of the virgin Mary. {Cf. Isaiah 7:14} Born of Mary “God is with us” in the person of Emmanuel.
" AND HOW DOES THIS HAPPEN TO ME, THAT THE MOTHER OF MY LORD SHOULD COME TO ME?" { LUKE 1:43 }
Elizabeth’s use of “mother of my Lord” ( Theotokos) is equivalent to “Holy Mary, mother of God” which Catholics use when addressing Mary in the recitation of the Rosary. Elizabeth used the word ‘Adonai’ which is Hebrew meaning Lord God. The Greek translation is ‘Kyrios’ which means the same: Yahweh.
Obviously, Mary did not conceive the divine nature of Christ. Nor did Mary beget the second Person of the Holy Trinity. He is eternally begotten of the Father. Biologically she is the efficient cause of the human nature of Christ. But she has been given by God the formal role of mother of Jesus Christ, who is one person with two natures: divine and human. She cannot be the mother of only half a person or the mother of two persons in one shell. So it can be truly said that Mary is the Mother of God.
:irish3: “I’ll drink to that!”
“ETERNALLY ‘BEGOTTEN’ OF THE FATHER…HE WAS CONCEIVED BY THE POWER OF THE HOLY SPIRIT AND ‘BORN’ OF THE VIRGIN MARY.”
The Council of Nicea (A.D. 325)
Pax vobiscum
Good Fella