(From the council of Antioch in 325 AD)
“Our faith is as follows:
To believe in one God, Father, almighty, incomprehensible, unchangeable and unalterable, administrator and governor of all, just, good, maker of heaven and earth, and all that is in them, the Lord of the Law and the Prophets and the New Testament.
And in one Lord Jesus Christ, the only-begotten Son, begotten not from nothing, but from the Father; not made, but a genuine offspring. He was begotten inexpressibly and unspeakably, because only the Father who begot and the Son who was begotten know it, “for no one knows the Father except the Son, or the Son except the Father” [Matt 11:27]. (10.) He always exists and never before did he not exist, for we have been taught from the holy Scriptures that he alone is God’s image. He is not unbegotten, for he is clearly begotten of the Father. This status has not been placed upon him; in fact, it would be godless blasphemy to say so. But the scriptures say that he is the real and truly begotten Son, so we believe him to be unchangeable and unalterable. He has not been begotten or come into being merely by the Father’s will, nor has this status been placed upon him, which would make him appear to be from nothing. But he was begotten as was fitting for him, not at all according to the impermissible idea that he resembles, is of similar nature to, or is associated with any of the things that came into existence through him. (11.) But, because this transcends all thought, conception, and expression, we simply confess that he has been begotten from the unbegotten Father, God the Word, true Light, righteousness, Jesus Christ, Lord of all and Savior. He is the image not of the will or of anything else except the actual person (hypostasis*) of the Father. This one, the Son, God the Word, was also born in the flesh from Mary the Mother of God and was made flesh. After suffering and dying, he rose from the dead and was taken into heaven, and he sits at the right hand of the Majesty of the Most High. He is coming to judge the living and the dead.
Just as the holy writings teach us to believe in our Savior, so also they teach us to believe in one Spirit, one catholic church, the resurrection of the dead, and the judgment which will pay back to each man according to what he has done in the flesh, whether good or evil.
We anathematize those who say or think or proclaim that the Son of God is a creation (ktisma); has come into being (genētos), or was made (poiētos), or was not truly begotten; or that there was a time when he did not exist (for we believe that he was and that he is Light); still also those who think he is unchangeable only by his free will [i.e., not according to his essence], as with those who think he did not exist before he was begotten and that he is not unchanging by his nature as the Father is. He has been proclaimed as the Father’s image in every respect, especially in this respect, that he does not change.”