God Himself, as he really is, is inexpressible to all. He alone has no equal, no one similar, and no one of the same glory. We call him unbegotten, in contrast to him who by nature is begotten. We praise him as without beginning in contrast to him who has a beginning. We worship him as timeless, in contrast to him who in time has come to exist.

He who is without beginning made the Son a beginning of created things. He produced him as a son for himself by begetting him. The Son has none of the distinct characteristics of God’s own being, for he is not equal to, nor is he of the same being as him.

God is wise, for he himself is the teacher of Wisdom. One sufficient proof is that God is invisible to all: He is invisible both to things which were made through the Son, and even to the Son himself.

I will say specifically how the invisible is seen by the Son: by that power by which God is able to see, each according to his own measure, the Son can bear to see the Father, as is determined.

So there is a Triad, not in equal glories. Their beings are not mixed together among themselves. As far as their glories, one infinitely more glorious than the other. The Father in his essence is foreign to the Son, because he exists without beginning.

Understand that the Monad eternally was; but the Dyad was not before it came into existence. It immediately follows that, although the Son did not exist, the Father was still God. Hence the Son, not being eternal came into existence by the Father’s will, He is the Only-begotten God, and this one is alien from all others.