41. The very statement of the name as our religion states it gives us a clear insight into the fact. For since it is condemned to say that the Father and the Son are two Gods, and it is also accursed to deny that the Son is God, any opinion as to the substance of the one being different from that of the other in asserting two Gods is excluded. For there is no other essence, except that of God the Father, from which God the Son of God was born before time. For since we are compelled to confess God the Father, and roundly declare that Christ the Son of God is God, and between these two truths lies the impious confession of two Gods: They must on the ground of their identity of nature and name be one in the kind of their essence if the name of their essence is necessarily one.

IV. "If any one dares to say that the Unborn God, or a part of Him, was born of Mary: let him be anathema."