And therefore He saith: All things whatsoever Thou hast given Me are from Thee. For in a special and peculiar sense all things are God's, and are given to us His creatures. Universal possession and power are most appropriate to God, but to us it is most fitting to receive. He bore witness, however, before His devout believers, to what was fitting to the servant, and prompted to obedience. For, He saith, the words which Thou hast given Me I have given unto them, and they received them and knew of a truth that I came forth from Thee, and they believed that Thou didst send Me. He expressly here calls His own words the sayings of God the Father, because of Their identity of Substance, and because He is God the Word declaratory of His Father's Will; just as the word, which proceeds out of our own mouths, and by its utterance assailing the hearing of one who stands by, interprets the hidden mysteries of the heart. Therefore also the saying of the Prophet declared concerning Him: His Name is ...
Now they have known that all things which thou gavest me, are from thee. That is, says St. Augustine, they now know, and will know more perfectly hereafter, that I myself am from thee, or proceed from thee, and am sent by thee to redeem the world. (Witham)
How did they keep Your word? By believing in Me, and giving no heed to the Jews. For he that believes in Him, it says, 'has set to his seal that God is true.' John 3:33 Some read, Now I know that all things whatsoever You have given Me are of You. But this would have no reason; for how would the Son be ignorant of the things of the Father? No the words are spoken of the disciples. From the time, He says, that I told them these things, they have learned that all that You have given Me is from You; nothing is alien, nothing peculiar to Me, with You. (For whatever is peculiar, puts most things in the condition of being alien. They therefore have known that all things, whatsoever I teach, are Your doctrines and teachings. And whence have they learned it? From My words; for so have I taught them. And not only this have I taught them, but also that I came out from You. For this He was anxious to prove through all the Gospel.