8. The illustrious Evangelist was desirous of explaining the glory of the only-begotten, but was unable to carry out his purpose. He therefore shews it by His fellowship with the Father. For he says He is of that nature; just as though any one to persons beholding Joseph sunk in a slavery inconsistent with his rank, and unaware of the splendour of his descent, were to point out that Jacob was his father, and his forefather Abraham. So in this sense the Evangelist said that when He dwelt among us He did not dim the glory of His nature, “For we beheld His glory, the glory as of the only-begotten of the Father.” So if even when He was made flesh it was plain who He was, then He remained who he was, and did not undergo the mutation into flesh.