John 14:24

But when He added, "And the saying which ye have heard is not mine, but the Father's who sent me," let us not be filled with wonder or fear: He is not inferior to the Father, and yet He is not, save of the Father: He is not unequal in Himself, but He is not of Himself. For it was no false word He uttered when He said, "He that loveth me not, keepeth not my sayings." He called them, you see, His own sayings; does He, then, contradict Himself when He said again, "And the saying which ye have heard is not mine"? And, perhaps, it was on account of some intended distinction that, when He said His own, He used "sayings" in the plural; but when He said that "the saying," that is, the Word, was not His own, but the Father's, He wished it to be understood of Himself. For in the beginning was the Word, and the Word was with God, and the Word was God. For as the Word, He is certainly not His own, but the Father's: just as He is not His own image, but the Father's; and is not Himself His own Son, but the Father's. Rightly, therefore, does He attribute whatever He does, as equal, to the Author of all, of whom He has this very prerogative, that He is in all respects His equal.

(Tract. lxxvi. 5) And perhaps there is a distinction at bottom, since He speaks of His sayings, when they are His own, in the plural number; as when He says, He that loveth Me not, keepeth not My sayings: when they are not His own, but the Father's, in the singular, i. e. as the Word, which is Himself. For He is not His own Word, but the Father's, as He is not His own image, but the Father's, or His own Son, but the Father's.

Nevertheless, I have heard of some who have passed in among you, holding the wicked doctrine of the strange and evil spirit; to whom ye did not allow entrance to sow their tares, but stopped your ears that ye might not receive that error which was proclaimed by them, as being persuaded that that spirit which deceives the people does not speak the things of Christ, but his own, for he is a lying spirit. But the Holy Spirit does not speak His own things, but those of Christ, and that not from himself, but from the Lord; even as the Lord also announced to us the things that He received from the Father. For, says He, "the word which ye hear is not Mine, but the Father's, who sent Me."

And the word which ye hear is not Mine but the Father's Who sent Me. He once more deals with a difficult subject which required of Him accurate explanation, and again brings forward illustrations by which they might have their understanding better fitted to fully comprehend the depth of the mystery. And He confirms the minds of His hearers in order that they might not be allured by the ignorant prejudices of the Jews, and in their desire to bring their own ideas into conformity with the Jewish do despite unto the holy teaching of the Gospel. What I wish to say is this in plain words: For the law having a shadow and an impressed type until a time of reformation, according to the saying of Paul, hath been our tutor to bring us unto Christ, and provided, as it were, a preliminary training for virtue according to godliness. If any one then were to call the Mosaic dispensation preparatory to true worship in Spirit, he would not miss the mark. For, for this reason, the Law brought nothing to perfection; but our Lord Jesus Christ showed us no longer the shadows of things, but the reality itself openly, no longer sketching the outline of virtue in types and figures, as Moses did, but setting it up naked in the public sight, accomplishing the perfect man in righteousness. The instruction of the words of Christ was then a shifting and moulding of the types into truth. And since, as the truth was already shining forth, it was superfluous for the shadow any longer to prevail, Christ ordained that those who came to Him by faith should no longer frame their conduct by the types of the Law. This was very grievous to the Jews, for they thought that Christ came to destroy the old Law, although they heard Him saying openly, I come not to destroy the Law, but to fulfil. For I say unto you, one jot or one tittle shall in no wise pass away from the Law till all things be accomplished. […]

(Hom. lxxv. 1, 2) It follows, And the word which ye hear is not Mine, but the Father's which sent Me; i. e. He that heareth not My words, inasmuch as he loveth not Me, so loveth he not My Father. This He says to show that He spoke nothing which was not the Father's, nothing beside what seemed good to the Father.