Now having said that all things were given Him by His Father, He rises to His own glory and excellence, shewing that in nothing He is surpassed by His Father. Hence He adds, And no one knoweth who the Son is but the Father, &c. For the mind of the creatures is not able to comprehend the manner of the Divine substance, which passes all understanding, and His glory transcends our highest contemplations. By Itself only is known what the Divine nature is. Therefore the Father, by that which He is, knoweth the Son; the Son, by that which He is, knoweth the Father, no difference intervening as regards the Divine nature. And in another place. For that God is, we believe, but what He is by nature, is incomprehensible. But if the Son was created, how could He alone know the Father, or how could He be known only by the Father. For to know the Divine nature is impossible to any creature, but to know each created thing what it is, does not surpass every understanding, though it is far beyond our senses.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).