by St. Gregory Nazianzen
If anyone disbelieves that Holy Mary is the Mother of God, such a one is estranged from the Godhead. Were anyone to say that [Christ] passed through the Virgin as through a channel and was not formed in her both in divine and human fashion–‘divine’ because without a husband’s cooperation–‘human’ because conceived in accordance with human law– such a one too is an atheist. Should anyone say that a man was made, and that God afterwards entered into him– he is risking damnation.