There's an overused word.
Definition: Blasphemy is the act of showing contempt, insulting, or expressing a lack of reverence for God; the act of claiming the attributes of deity; defiant irreverence toward something considered sacred.
Because the Holy Spirit did not lead the writers of the Scripture to say what you extrapolate from Scripture, as you have been informed repeatedly by me and other FReepers as well.
Saying over and over that the Holy Spirit did not lead the writers of the Scripture to say what I have referenced from Scripture does not make it so. The referenced Scriptures record that Mary conceived, brought forth, and is the mother of:
that which is of the Holy Ghost
the one who shall save his people from their sins
Emmanuel, God with us
a son who shall be great
who shall be called the Son of the Highest
the one whom the Lord God shall give the throne of his father David
the one who shall reign over the house of Jacob for ever
the one whose kingdom there shall be no end
that holy thing
the one who shall be called the Son of God
the mother of my Lord
a Saviour, which is Christ the Lord
the Lord’s Christ
the Lord’s salvation
the King of the Jews
The Lord’s son out of Egypt
These words are not an extrapolation; they are what the Holy Spirit led the writers of the Scripture to write, taken directly from Scriptures. And unless you can give me a specific explanation as to why it is not so, together these words teach that Mary is the mother of God.
Paul writes in Philippians 2: Let this mind be in you, which was also in Christ Jesus: Who, being in the form of God, thought it not robbery to be equal with God: But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men: And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross.
If God would allow himself as Jesus Christ to be made in the likeness of men, why would he not also, like any other man, be the son of a woman?