No one has yet discovered or ever shall discover what God is in His nature and essence... we shall, in time to come, 'know as we are known' (I Cor 13:12). But for the present what reaches us is a scant emanation, as it were a small beam from a great light - which means that any one who 'knew' God or whose 'knowledge' of Him has been attested to in the Bible, has a manifestly more brilliant knowledge than others not equally illuminated. This superiority was reckoned knowledge in the full sense, not because it really was so, but by the contrast of relative strengths.
Gregory of NazianzusI cannot think on the one without quickly being encircled by the splendor of the three; nor can I discern the three without being straightway carried back to the one.
Gregory of NazianzusLet us become like Christ, since Christ became like us. He assumed the worse that He might give us the better; He became poor that we through His poverty might be rich.
Gregory of NazianzusThe Godhead is, to speak concisely, undivided there is one mingling of Light, as it were of three suns joined to each other.
Gregory of Nazianzus