John 17:17

We are made sons through Christ by adoption and grace, partaking of his Spirit. For “as many as received him,” he says, “to them he gave power to become children of God, even to them that believe on his name.” And therefore, he is also the Truth, saying, “I am the Truth,” and in his address to his Father, he said, “Sanctify them through your Truth, your Word is Truth.” We, by imitation [of this truth], become virtuous and sons. Therefore, he did not say “that they may be one as we are” so that we might become such as he is, but that as he, being the Word, is in his own Father, we too, seeing him as our example, might become one toward each other in concord and oneness of spirit, nor be at variance as the Corinthians, but be of one mind as those five thousand in the Acts of the Apostles who were as one.

For there is no other God like Thee; for on Thee is our reliance. "Sanctify them by Thy truth: for Thy word is truth."

The Father, the Son and the Holy Spirit alike give sanctification, life, light, comfort, and any other similar graces. And let no one attribute the power of sanctification in a special sense to the Spirit when he hears the Savior in the Gospel saying to the Father concerning his disciples, “Father, sanctify them in your name.” So too all the other gifts are produced in those who are worthy alike by the Father, the Son and the Holy Spirit: every grace and power, guidance, life, comfort, the change to immortality, the passage to liberty, and every other boon that exists, which descends to us.

(Hom. lxxxii) Or thus: Sanctify them in Thy truth; i. e. Make them holy, by the gift of the Holy Spirit, and sound doctrines: for sound doctrines give knowledge of God, and sanctify the soul. And as He is speaking of doctrines, He adds, Thy word is truth, i. e. there is in it no lie, nor any thing typical, or bodily. Again, Sanctify them in Thy truth, may mean, Separate them for the ministry of the word, and preaching.

"Sanctify them through Thy truth." "Make them holy by the gift of the Spirit, and of right doctrines." As when He saith, "Ye are clean through the word which I spake unto you," so now He saith the same thing, "Instruct them, teach them the truth." "And yet He saith that the Spirit doth this. How then doth He now ask it from the Father?" That thou mayest again learn their equality of Honor. For right doctrines asserted concerning God sanctify the soul. And if He saith that they are sanctified by the word, marvel not. And to show that He speaketh of doctrines, He addeth, "Thy word is truth." That is, "there is no falsehood in it, and all that is said in it must needs come to pass"; and again, it signifieth nothing typical or bodily. As also Paul saith concerning the Church, that He hath sanctified it by the Word. For the Word of God is wont also to cleanse. Moreover, the, "sanctify them," seems to me to signify something else, such as this, "Set them apart for the Word and for preaching."

The heirs therefore of the New Testament are sanctified in that truth which was adumbrated in the purifications of the Old Testament; and when they are sanctified in the truth, they are in other words sanctified in Christ, who said in truth "I am the way, and the truth, and the life." As also when He said, "The truth shall make you free," in explanation of His words, He added soon after, "If the Son shall make you free, ye shall be free indeed;" in order to show that what He had previously called the truth, He a minute afterwards denominates the Son. And what else did He mean by the words before us, "Sanctify them in the truth," but, Sanctify them in me?

Finally, He proceeds, and doing so fails not to suggest the same with increasing clearness: "Thy speech is truth." What else did He mean than "I am the truth"? For the Greek Gospel has logos, which is also the word that is found in the passage where it is said, "In the beginning was the Word, and the Word was with God, and the Word was God." And that Word at least we know to be the only begotten Son of God, which "was made flesh, and dwelt among us." Hence also there might have been put here as it actually has been put in certain copies "Thy Word is truth;" just as in some copies that other passage is written, "In the beginning was the speech." But in the Greek without any variation it is logos in both cases. The Father therefore sanctifies in the truth, that is, in His own Word, in His Only begotten, His own heirs and His (the Son's) co-heirs.

(Tr. cviii) Sanctify them through Thy truth: for thus were they to be kept from the evil. But it may be asked, how it was that they were not of the world, when they were not yet sanctified in the truth? Because the sanctified have still to grow in sanctity, and this by the help of God's grace. The heirs of the New Testament are sanctified in that truth, the shadows of which were the sanctification of the Old Testament; they are sanctified in Christ, Who said above, I am the way, the truth, and the life. (c. 14:6) It follows, Thy discourse is truth. The Greek is λόγος, i. e. word. The Father then sanctified them in the truth, i. e. in His Word the Only-Begotten, them, i. e. the heirs of God, and joint-heirs with Christ.

CHAPTER X. That Christ is not holy from participation in anything different from Himself; and that the sanctification through the Spirit is not alien to His Substance.

After giving the Father here especially the name of Holy, and praying that the disciples might be kept in the truth, that is, in His Spirit (for the Spirit is the truth, as John says, as He is also the Spirit of truth, that is, of the Only-begotten Himself), He declares that He sent them into the world after the fashion of His own mission; for Jesus is the Apostle and High Priest of our confession, as Paul says, in the appropriate character of His Manhood, and by the way of His humiliation. He says, then, that the disciples, after having been once for all thereto prepared, stand wholly in need of sanctification by the Holy Father, Who implanteth in them the Holy Spirit through the Son. For in truth the disciples of the Saviour would never have become so illustrious as to be the torchbearers of the whole world, nor would they have withstood the brunt of the temptations of their enemies, nor the terrible assaults of the devil, had they not had their minds fortified by communion with the Spirit; and had they not been continually thereby enabled to accomplish a bidding unheard of before and passing mere human power; and had they not been ever led by the light of the Spirit, without effort, to a perfect knowledge of the inspired writings and the holy doctrines of the Church. Furthermore, the Saviour, being assembled together with them after His resurrection from the dead, as is recorded, and bidding them preach grace through faith throughout the whole world, charged them not to depart from Jerusalem, but to wait for the promise of the Father, which they had heard of Him as well as by the mouth of the holy prophets. For it shall come to pass in those days, saith the Lord, that I will pour out My Spirit upon all flesh. And the Saviour Himself plainly declared that His Holy Spirit would be shed forth upon them, in the words: I have yet many things to say unto you, but ye cannot bear them now. Howbeit, when He, the Spirit of Truth, is come, He shall guide you into all truth; and again: I will pray the Father, and He shall give you another Comforter. For the Spirit belongeth unto God the Father, and none the less also unto the Son Himself, not as distinct Entities, or as though He was inherent or existed in Either divisibly; but, inasmuch as the Son by Nature proceeds from the Father and is in Him (being the true Offspring of His Essence), the Spirit----Which is the Father's by Nature----is brought down to men; shed forth indeed from the Father, but through the Son Himself conveyed to the creature; not merely ministerially or in the manner of a servant, but, as I said just now, proceeding from the Substance Itself of God the Father; and shed forth on those worthy to receive Him through the Word, Which is Consubstantial with and proceeded from Him, and so proceeded as to have a self-dependent being, and ever abideth in Him, at the same time in unity, and also, as it were, with an individual existence. For we maintain that the Son has an independent existence, but still inheres in His Father, and has in Himself Him that begat Him; and that the Spirit of the Father is indeed the Spirit of the Son; and that, when the Father sends or promises to distribute the Spirit to the Saints, the Son also vouchsafes the Spirit to them as His own, because of His identity in Substance with the Father. And that the Father works in every respect through Him He has Himself very clearly pointed out to us in the words: It is expedient for you that I go away: for if I go not away the Comforter cannot come unto you; but when I depart I will send Him unto you. And again: I will pray the Father, and He shall give you another Comforter. Plainly here He promises to send us the Comforter.

Since, then, the disciples, who respect My sayings, have been sent forth on their mission in the world, even as I myself, keep them, Holy Father, in Thy truth; that is, in Thy Word, in Which, and through Which, the Spirit Which sanctifies is and proceeds. And what is the Saviour's aim in saying this? He besought the Father for that sanctification which is in and through the Spirit to be given to ourselves; and He desires that which was in us at the first age of the world, and at the beginning of creation by gift of God, to be quickened anew into life. This we say, because the Only-begotten is our Mediator, and fulfils the part of Advocate for us before our Father Which is in heaven. But that we may free our explanation from all obscurity, and make the meaning of what is said clear to our hearers, let us say a few words about the creation of the first man.

The inspired Moses said concerning him, that God took dust from the earth and formed man of it. He then goes on to tell the manner in which, after the body was perfectly joined together, life was given to it. He breathed, he says, into his nostrils the breath of life; signifying that not without sanctification by the Spirit was life given to man, nor yet was it wholly devoid or barren of the Divine Nature. For never could anything, which had so base an origin, have been seen to be created in the Image of the Most High, had it not taken and received, through the Spirit moulding it, so to speak, a fair mask, by the Will of God. For as His Spirit is a perfect Likeness of the Substance of the Only-begotten, according to the saying of Paul: For whom He foreknew, He also fore-ordained to be conformed to the Image of His Son, He maketh those in whom He abides to be conformed to the Image of the Father, that is, the Son; and thus all thoughts are uplifted through the Son to the Father, from Whom He proceeds by the Spirit. He desires, therefore, the nature of man to be renewed, and moulded anew, as it were, into its original likeness, by communion with the Spirit; in order that, putting on that pristine grace, and being shaped anew into conformity with Him, we may be found able to prevail over the sin that reigns in this world, and may simply cling to the love of God, striving with all our might after whatsoever things be good, and, lifting our minds above fleshly lusts, may keep the beauty of His Image implanted in ourselves unspoiled. For this is spiritual life, and this is the meaning of worship in the Spirit.

By these words He indicates once more, and makes clear to us, the reason why He requires to ascend to God the Father, and why so to do becomes Him, while He is still our Mediator, and High Priest, and Advocate, according to the Holy Scripture; and shows us that it is in order that, if at any time we encounter failure, or miss the straight path in thought or action, or are assailed by unexpected perils or buffeted by the tempest of the devil's malice, He may approach His Father on our behalf in His appropriate character as Mediator; and join with Him in granting good gifts to those who are worthy. For it would well become Him so to do, as He is God by Nature. Those then, He says, who have received Thy Word, O Father, through Me, show forth My Likeness in themselves and are conformed to the pattern of Thine own Son, who, like Him, pass unscathed through the ocean of the world's wickedness, and have shown themselves foreigners and strangers to the love of pleasure in this life, and every kind of vice. Therefore keep them in Thy truth, for exceeding purity is inherent in Christ. For He is truly God, and cannot be subject to sin nor endure it, but is rather the fountain of all goodness, and the beauty of holiness. For the Divine Nature, that ruleth over all, can do nothing but what is in truth suitable and belongeth thereto. And the holy disciples, I mean all who believe on Him, cannot otherwise exhibit purity unspotted by the wickedness of this world than by means of forgiveness and grace from above, which putteth away the defilement of previous offences and the accusing sins of their past lives; and, further, conferring on them the glory of a life of sanctification, though their continuance therein be not free from conflict, as Paul wisely teaches us, saying: Wherefore let him that thinketh he standeth take heed lest he fall. For our life is cast upon the deep, and we are tossed by divers storms, as the devil tempts without ceasing, and continually assails and strives to defile if he can, by the insidious inventions of malice, even those who have been already made pure. For his meat is well chosen, as the prophet says. Having then borne witness to His disciples that their life was out of the world, and that they were conformed to the likeness of His own essential purity, He proceeds to pray to His Father to keep them. It is almost as though He said: O Holy Father, if they were in the world----that is, if they lived the life that has honour in this world----if, sowing the seed of earthly and temporary pleasure in their hearts, they imprinted on themselves the foul image of the evil one, would not have attacked them with temptation, nor have armed himself against his own children, for he would have in them the likeness of his own inherent wickedness. But since they, following after Me, laugh to scorn the deceitfulness of this world, and are out of the world, and, moreover, in their conduct show most clearly the impress of My incomparable holiness, and on that account have Satan, who is ever murmuring against the Saints, for their bitter foe, ever lying in wait for them; therefore of necessity I desire them to be in Thy safe keeping. And to be in Thy safe keeping is not to be far from Thy truth, that is, from Me. For I am by Nature Thy truth, O Father, the Essential, True, and Living Word.

We must suppose that this is what He thinks right to say. See how, in all His sayings, so to speak, He insinuates His own Person into the action of the Father, whatever that action has reference to, and puts Himself altogether side by side with Him, wishing probably to show how true the statement is: All things were made by Him; and without Him was not anything made. In the previous passage, indeed, He briefly besought His Father to keep the disciples in the Name which had been given unto Himself. In this, however, He desires His prayer on their behalf to be fulfilled in the truth of the Father. What, then, does this mean; or what does the change in the language signify? Is it meant to show that the working of the Father, shown through Him in mercy to the Saints, is not uniform? For in the first passage, when He says that His disciples ought to be kept in the Name of the Father, that is to say, in the glory and power of His Godhead, so that they should be out of the power of the enemy, He declares that aid is vouchsafed to the Saints in whatever happens unto them, after the secret fashion that Christ at the proper season revealed to His disciples when He said: Simon, Simon, behold, Satan asked to have you, that he might sift you as wheat: but I made supplication for thee, that thy fail not. For many of God's dealings concerning us are in secret, Christ taking thought for the life of each of us, and covering us as with a shield. But here, when He says Keep them in the truth, He signifies clearly their being led by revelation of the truth to apprehend it. For no man can attain to the knowledge of truth without the light of the Spirit, nor can he at all, humanly speaking, work out for himself an accurate comprehension of the Divine doctrines. For the mysteries of Holy Writ exceed our understanding, and glorious is the blessing of having even a moderate knowledge concerning Christ.

The blessed Peter, moreover, when he confessed that the Lord was in truth the Son of the living God, heard the words: Blessed art thou, Simon Bar-jona; for flesh and blood hath not revealed it unto thee, but My Father Which is in heaven. For He reveals to the Saints His Son, Who is truth, and does not allow Satan to lead the mind of His believers astray to false knowledge; relying on whom, in their season, Hymenaeus and Alexander have made shipwreck concerning the faith, rejecting the true doctrine of the faith. Of great avail, then, towards a right continuance in the straight path of thought and action, is our safe keeping by the Father in the Name of God and in truth; that we may not fail in making our light shine forth in action, nor, by turning aside to folly, stray far away from the doctrines of true holiness. And this may easily be our lot, if we are seen to be out of the world while not disavowing our birth in the world; for of the dust of the earth are we all framed, as the Scripture saith, but by the quality of our deeds we rid ourselves of life in the world. For while they walk upon earth, those who love conformity with Christ are citizens of heaven.

We must also remark that He very appropriately here calls the Father holy, almost, as it were, reminding Him that, as He is holy, He takes pleasure in those that are holy. And all men are holy, whosoever are seen to be unspotted by the world, and whosoever are by nature in Christ, in the Father's likeness adopted, and chosen to be His disciples by the sanctification according to grace, and the light and goodness of their lives. For a man may thus be conformed to the Image of God, Which transcends the world.