An Exact Exposition of the Orthodox Faith
BOOK I CHAPTER I
That the Deity is incomprehensible, and that we ought not to pry into and meddle with tire things which have not been delivered to us by the holy Prophets, and Apostles, and Evangelists.
No one hath seen God at any time; the Only-begotten Son, which is in the bosom of the Father, He hath declared Him(1). The Deity, therefore, is ineffable and incomprehensible. For no one knoweth the Father, save the Son, nor the Son, save the Father(2). And the Holy Spirit, too, so knows the things of God as the spirit of the man knows the things that are in him(3). Moreover, after the first and blessed nature no one, not of men only, but even of supramundane powers, and the Cherubim, I say, and Seraphim themselves, has ever known God, save he to whom He revealed Himself.