v. 10 — Believest thou not that I am in the Father and the Father in Me?
Commentary on the Gospel according to John · St Cyril of Alexandria
"I indeed, O Philip," He would say, "in depicting in Myself the nature of My Father, am the Image of His essence, moulded as that implies after His likeness, not (as might be supposed) by the bestowal of glories that once were not Mine, nor even by the reflected brilliancy of Divine endowments that once were unfamiliar but have been granted from without: but rather in My own nature are contained the qualities peculiar to My Father; and whatsoever He may be, that in very truth am I, in regard to sameness in essence. To this thou wilt surely reply: for it seems thou didst not go on to realise that I am in the Father, and the Father in Me. And yet the force of my words shall constrain thee henceforth, even in spite of thyself, to acknowledge thy assent to this. Therefore, whatsoever I say is spoken as the words of the Father; and whatsoever I do, is done by the Father also." And Christ says this, not as one making use of the words of another, nor even as speaking in the office and capacity of a prophet to interpret the commands that came from the Father above: for the prophets ever spake, not their own words, but the words which they received by inspiration from God. Again, He attributes to His Father the successful performance of His miracles, not implying that He works His wonders by a power not His own, as did for instance those Apostles who said to the people: "Give not heed to us, as though by our own power or godliness we had healed the sick man." For the saints are wont to use no power of their own in working their miracles, but rather the power of God: for they appear as ministers and servants, showing forth the words and also the works of God. But since the Son is Consubstantial with the Father, differing from Him in no respect except as to distinct personality, He says that His own words are those of the Father, since the Father could in no wise make use of words differing from those of the Son. And further, thou wilt understand the same to be signified in the majesty of His works. For since the Father could never by any possibility carry into effect any work without the Son's knowledge and co-operation, Christ attributes His works to His Father. For consider Him as saying more clearly this: "I am in all respects like to Him Who begat Me, and an Image of His essence; not merely adorned with the outward appearance of a glory that is not Mine, but, owing to the identity of essence, containing within Myself My Father in all His fulness."
CyrJn 9.10.1
The words that I speak, I speak not from Myself: but the Father abiding in Me Himself doeth the works.
CyrJn 9.10.2
"If," He would say, "My Father had spoken anything to you, He would have used words no other than these which I now speak. For so great is the equality in essence between Myself and Him, that My words are His words, and whatsoever I do may be believed to be His actions: for abiding in Me, by reason of the exact equivalence in essence, He Himself doeth the works." For since the Godhead is One, in the Father, in the Son, and in the Spirit, every word that cometh from the Father comes always through the Son by the Spirit: and every work or miracle is through the Son by the Spirit, and yet is considered as coming from the Father. For the Son is not apart from the essence of the Father, nor indeed is the Holy Ghost; but the Son, being in the Father, and having the Father again in Himself, claims that the Father is the doer of the works. For the nature of the Father is mighty in operation, and shines out clearly in the Son.
CyrJn 9.10.3
And one might add to this another meaning that is involved, suggested clearly by the principles that underlie the Incarnation. He says: I speak not of Myself, meaning "not in severance from or in lack of accordance with God the Father." For since He appeared to those who saw Him in human form, He refers His words back to the Divine nature, as speaking in the Person of the Father; and the same with His actions: and He almost seems to say: "Let not this human form deprive Me of that reverent estimation which is due and befitting to Me, and do not suppose that My words are those of a mere man or of one like unto yourselves, but believe them to be in very truth Divine, and such as befit the Father equally with Myself. And He it is Who works, abiding in Me: for I am in Him, and He is in Me. Think not therefore that a mighty and extraordinary privilege was granted to the men of former days, in that they saw God in a vision of fire, and heard His voice speaking unto them. For ye have in reality seen the Father through Me and in Me; since I have appeared among you, being in My nature God, and have come visibly, according to the words of the Psalmist. And be well assured that in hearing My words, ye heard the words of the Father; and ye have been spectators of His works, and of the might that is in Him. For by Me He speaks, as by His own Word; and in Me He carries out and achieves His wondrous works, as though by His own Power."
CyrJn 9.10.4
And so I suppose that no reasonable theory would ever separate Him Who is the Word of the Father and the mighty Power of His essence, from the essence of the Father. Eather would every one freely confess that the Word ever was from the beginning in His nature contained in the Father's essence, every one at least who is anything but distraught in mental perplexity.
CyrJn 9.10.5