The answer
When the authority does not abide by the teaching of the Scriptures and the Holy Tradition, then we ought to obey God more than people. The Coptic Orthodox Church venerates Saint Mary, and devoutly asserts that the Ever-Virgin is indeed the Mother of God, Theotokos. The discourse on this very critical subject was indoctrinated at the Council of Ephesus in 431 A.D. [Third Ecumenical Council, convened by 200 bishops and presided over by St Cyril of Alexandria to confront the Nestorian heresy]. Hence, the "Introduction to the Creed" was added:
"We exalt you, the mother of the true Light. We glorify you, O saint, the Theotokos (Mother of God), for you brought forth unto us the Savior of the whole world; He came and saved our souls.
Glory to You, our Master, Our King, Christ, the pride of the Apostles, the crown of the martyrs, the joy of the righteous, the firmness of the churches, the forgiveness of sins.
We proclaim the Holy Trinity in one Godhead. We worship Him. We glorify Him.
Lord have mercy. Lord have mercy. Lord bless. Amen”
St. Cyril of Alexandria [Letter to the Monks of Egypt], writes, “I have been amazed that some are utterly in doubt as to whether or not the Holy Virgin is able to be called the Mother of God. For if our Lord Jesus Christ is God, how should the Holy Virgin who bore him not be the Mother of God?”
For more information on Christology and Mariology in the perspective of the Coptic Orthodox Church, please visit the links below:
https://suscopts.org/resources/literature/orthodox-faith/
https://suscopts.org/resources/literature/orthodox-faith/christology/
https://suscopts.org/resources/literature/orthodox-faith/mariology/
https://suscopts.org/resources/literature/orthodox-faith/difference-between-catholicism-and-orthodoxy/
Answered by His Eminence Metropolitan Youssef (opens in a new tab)