John 14:24

(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.

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.

(Hom. xxx.) In proportion as a man's love rests upon lower things, in that proportion is he removed from heavenly love: He that loveth Me not, keepeth not My sayings. To the love then of our Maker, let the tongue, mind, life bear witness.