THE MOTHER OF GOD (THEOTOKOS):
The 6th Ecumenical Council (Synod) also proclaimed "...Mary to be Virgin..." "...mainly and Truly Theotokos." Obviously by calling her "Above all Saints Virgin" (i.e. "Panagia"), it is proclaimed that she is "Mother" for she gave real birth to the human Nature of the God-Man, whereas she is certainly the "Mother of God" because she conceived, carried and gave birth to the Incarnate Logos/Word and Son of God, the Second Person of the Holy Trinity. She did not give birth to His Divine Nature but only to His human nature, which He took up Hypostatically.
The Ever Blessed Mary was Truly, not falsely, the Mother of the Lord Jesus Christ, the Son of God. This fact is witnessed by Holy Scripture that refers to her as "...the Mother of Jesus..." or "...His Mother..." and by the Archangel Gabriel when he announced that she would conceive in her "...womb and bring forth a Son." To Saint Joseph the Betrothed the same Archangel announced that "...that which is Conceived in her is of the Holy Spirit." The Ever Blessed Virgin Mary was first addressed as "...the Mother of the Lord..." by Saint Elizabeth, the mother of Saint John the Baptist. Saint Paul stated that "...when the fullness of the time had come, God sent forth His Son, born of a woman, born under the Law..." and that "...Jesus Christ our Lord...was born of the seed of David according to the flesh."
IIRC I don’t believe the 4th Council referred to her as ever-Virgin. I’ll confirm that later.
All of the extra-biblical words in the universe are NEVER going to coverup the FACT that the phrase “Mother of GOD” is NOT found in the Book that Rome gave the world.
I think we've found Rome's problem.
"...when the fullness of the time had come, God sent forth His Son, born of a woman, born under the Law..."