For I have given unto them the words which you gave me; and they have received them, and have known surely that I came out from you, and they have believed that you did send me.
All Commentaries on John 17:8 Go To John 17
Cyril of Alexandria
AD 444
He testified then to those who love Him, that they received and kept the words given Him by the Father, and were besides satisfied that He came, and was sent, from God; while those who were diseased with the contrary opinion were otherwise minded. For they who neither received His words nor kept their minds open to conviction, were not disposed to believe that He came from God, and was sent by Him. Moreover, the Jews said on one occasion: If this Man were from God, He would not have broken the Sabbath; and on another, We are disciples of Moses: we know that God hath spoken unto Moses, but as for this Man we know not whence He is. You see how they denied His mission; so that they even cried in their shamelessness, they knew not whence He was. And that they did not admit His unspeakably high birth from everlasting, I mean His proceeding from God the Father, diseased as they were by the great perversity of their thoughts, and ready to stone Him with stones merely because of His Incarnation, you may easily satisfy yourself, if you will listen to the words of the Evangelist: For this cause therefore the Jews sought to kill Him, because He not only brake the Sabbath, but also called God His own Father, making Himself equal with God. And what the impious Jews said unto Him is also recorded: For a good work we stone Thee not, but for blasphemy; because that Thou, being a man, makest Thyself God. You will understand then very clearly, that those who truly keep His words have believed and confessed that He manifested Himself from the Father (for this is, I think, what I came forth means), and that He was sent to us to tell us the commandment of the Lord, as is said in the Psalms; while they who laughed to scorn the Word, Who was thus Divine and from the Father, rejected the faith, and plainly denied that He was God and from the Father, and that He came to us for our salvation, and dwelt among us, yet without sin. Justly, then, does He commend to God the Father, those who are good men, and are His own, and have submitted their souls to the hearing of His words, and will ever hold them in remembrance; that what He said may be made clear, beginning from the time of His sojourn amongst us. And what are His words? Everyone therefore who shall confess Me before men, him will I also confess before My Father Which is in heaven. But whosoever shall deny Me before men, him will I also deny before My Father Which is in heaven. This also God the Father Himself long ago declared that He would do, speaking by the mouth of Isaiah: Ye are My witnesses, saith the Lord, and the servant whom I have chosen. Our Saviour then speaks, at the same time, in His character as God, and in His character as Man. For He was at once God and Man, speaking in either character without reproach, suiting each occasion with appropriate words as it required.