This was the great stronghold of the Arians, by which they sought to prove that the Son was not God, but the highest creature of God; but SS. Athanasius, Augustine, Basil, and the rest of the Fathers, admirably reply to them, that Christ is here speaking of Himself not as God, but as man. For as such He was less, not only than the Father, but even than the angels. And that Christ is speaking thus is plain from hence, that He gives the reason why He is going to the Father:*because,He saith,My Father is greater than I.Now Christ goeth to the Father, in that, as man, He ascendeth intoheaven. For as God He is alway inheavenwith the Father. Wherefore S. Augustine saith, “He went,in that He was in one place: He remained, in that He was everywhere.” That is, He went through His Humanity, He abode through His Divinity. Therefore His Father was greater than He in respect to His Humanity, not His Divinity. The meaning then is, Ye must rejoice, 0 ye Apostles, at My departure, because I go to the Father, and ascend intoheavento greater honour and dignity, that I may obtain from the Father, for Myself and for you, the rewards of My Passion, even a seat at the Father’s right hand, and the empire of the universe, the adoration of all the angels, and the conversion of all nations to My faith and worship: and for you the Holy Ghost and all His gifts, armed with which ye shall conquer the whole world for Me and for yourselves, and bring it with you to celestial glory. For those things, which are far greater than what ye have as yet seen and received, I will ask and obtain when I go to the Father.
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Moreover, the analogy of the Divine compared with human generation is so entirely different as to refute the Arians. For in things human the father is greater than his son. 1st. Because he is prior, and senior to the son. 2d. Because he is greater in stature and bulk, for a grown-up man generates a little infant. 3d. Because he produces a nature numerically different from himself, which he communicates to his son. Wherefore he is greater than that nature as being its author. 4th. Because of his own free will he begets a son. For it was possible to him not to have begotten. But in things Divine the manner is altogether different. For the Father is greater than the Son neither in age nor size: neither does He beget a Deity different from His Own, but communicates to the Son the same Deity which He Himself has. Neither does He beget of His own will, so to say, but of the natural fruitfulness of the Divine Nature He produces a Son the equal of Himself, nor can He produce another. Lastly, S. Cyril, in the Council of Ephesus, proves that the Father is greater than Christ in so far as Christ is man, but not in that He is God, after this manner:—“We acknowledge Him (the Son) to be in all respects as the Father, to be incapable either of turning, or of change, and to have need of nothing, a perfect Son, like unto the Father, and differing from Him only in this respect that the Father is unbegotten. For He is the perfect and express Image of the Father. And it is certain that the Image ought fully to include all those things in which the Pattern itself, which is greater, is perfectly expressed, even as the Lord Himself hath taught, saying,the Father is greater than I.”