34 For he whom God hath sent speaketh the words of God: for God giveth not the Spirit by measure unto him.
[AD 220] Tertullian on John 3:34
Emaciation displeases not us; for it is not by weight that God bestows flesh, any more than He does "the Spirit by measure." More easily, it may be, through the "strait gate" of salvation will slenderer flesh enter; more speedily will lighter flesh rise; longer in the sepulchre will drier flesh retain its firmness.

[AD 300] Ammonius of Alexandria on John 3:34
As the fount of the Spirit, [Christ] imparts him. He is speaking of the working of the Spirit, which people receive in some measure. For the Son himself has the full working of the Spirit in its entirety. Truly, the Son has the entire Spirit in essence and not in some measure, as a created being might have. Therefore, he himself imparts the Spirit, and by their petitions the saints make Christ supply the Spirit.

[AD 304] Victorinus of Pettau on John 3:34
"And He had in His right hand seven stars." He said that in His right hand He had seven stars, because the Holy Spirit of sevenfold agency was given into His power by the Father. As Peter exclaimed to the Jews: "Being at the right hand of God exalted, He hath shed forth this Spirit received from the Father, which ye both see and hear." Moreover, John the Baptist had also anticipated this, by saying to his disciples: "For God giveth not the Spirit by measure unto Him. The Father," says he, "loveth the Son, and hath given all things into His hands." Those seven stars are the seven churches, which he names in his addresses by name, old calls them to whom he wrote epistles. Not that they are themselves the only, or even the principal churches; but what he says to one, he says to all. For they are in no respect different, that on that ground any one should prefer them to the larger number of similar small ones. In the whole world Paul taught that all the churches are arranged by sevens, that they are called seven, and that the Catholic Church is one. And first of all, indeed, that he himself also might maintain the type of seven churches, he did not exceed that number. But he wrote to the Romans, to the Corinthians, to the Galatians, to the Ephesians, to the Thessalonians, to the Philippians, to the Colossians; afterwards he wrote to individual persons, so as not to exceed the number of seven churches. And abridging in a short space his announcement, he thus says to Timothy: "That thou mayest know how thou oughtest to behave thyself in the Church of the living God." We read also that this typical number is announced by the Holy Spirit by the month of Isaiah: "Of seven women which took hold of one man." The one man is Christ, not born of seed; but the seven women are seven churches, receiving His bread, and clothed with his apparel, who ask that their reproach should be taken away, only that His name should be called upon them. The bread is the Holy Spirit, which nourishes to eternal life, promised to them, that is, by faith. And His garments wherewith they desire to be clothed are the glory of immortality, of which Paul the apostle says: "For this corruptible must put on incorruption, and this mortal must put on mortality." Moreover, they ask that their reproach may be taken away-that is, that they may be cleansed from their sins: for the reproach is the original sin which is taken away in baptism, and they begin to be called Christian men, which is, "Let thy name be called upon us." Therefore in these seven churches, of one Catholic Church are believers, because it is one in seven by the quality of faith and election. Whether writing to them who labour in the world, and live of the frugality of their labours, and are patient, and when they see certain men in the Church wasters, and pernicious, they hear them, lest there should become dissension, he yet admonishes them by love, that in what respects their faith is deficient they should repent; or to those who dwell in cruel places among persecutors, that they should continue faithful; or to those who, under the pretext of mercy, do unlawful sins in the Church, and make them manifest to be done by others; or to those that are at ease in the Church; or to those who are negligent, and Christians only in name; or to those who are meekly instructed, that they may bravely persevere in faith; or to those who study the Scriptures, and labour to know the mysteries of their announcement, and are unwilling to do God's work that is mercy and love: to all he urges penitence, to all he declares judgment.

[AD 407] John Chrysostom on John 3:34
(Hom. xxx. 2) By Spirit here is meant the operation of the Holy Spirit. He wishes to show that all of us have received the operation of the Spirit by measure, but that Christ contains within Himself the whole operation of the Spirit. How then shall He be suspected, Who saith nothing, but what is from God, and the Spirit? For He makes no mention yet of God the Word, but rests His doctrine on the authority of the Father and the Spirit. For men knew that there was God, and knew that there was the Spirit, (although they had not right belief about His nature;) but that there was the Son they did not know.

[AD 407] John Chrysostom on John 3:34
"For God giveth not the Spirit by measure."

Again, as I said, he brings down his discourse to lower ground, varying it and making it suitable to be received by those who heard it then; otherwise he could not have raised them and increased their fear. For had he spoken anything great and sublime concerning Jesus Himself, they would not have believed, but might even have despised Him. Therefore he leads up all to the Father, speaking for a while of Christ as of a man. But what is it that he saith, "God giveth not the Spirit by measure"? He would show that we all have received the operation of the Spirit, by measure, (for in this place he means by "Spirit" the operation of the Spirit, for this it is that is divided,) but that Christ hath all Its operation unmeasured and entire. Now if His operations be unmeasured, much more His Essence. Seest thou too that the Spirit is Infinite? How then can He who hath received all the operation of the Spirit, who knoweth the things of God, who saith, "We speak that We have heard, and testify that We have seen" (c. iii. 11), be rightly suspected? He saith nothing which is not "of God," or which is not of "the Spirit." And for a while he uttereth nothing concerning God the Word, but maketh all his doctrine credible by (reference to) the Father and the Spirit. For that there is a God they knew, and that there is a Spirit they knew, (even though they held not a right opinion concerning Him,) but that there is a Son, they knew not. It is for this reason that he ever has recourse to the Father and the Spirit, thence confirming his words.

[AD 430] Augustine of Hippo on John 3:34
"For He whom God hath sent speaketh the words of God." Himself is the true God, and God sent Him: God sent God. Join both, one God, true God sent by God. Ask concerning them singly, He is God; ask concerning them both, they are God. Not individually God, and both Gods; but each individual God, and both God. For so great is the charity of the Holy Spirit - there, so great the peace of unity, that when thou questionest about them individually, the answer to thee is, God; when thou askest concerning the Trinity, thou gettest for answer, God. For if the spirit of man, when it cleaves to God, is one spirit, as the apostle openly declares, "He that is joined to the Lord is one spirit;" how much more is the equal Son, joined to the Father, together with Him one God! Hear another testimony. You know how many believed, when they sold all they had and laid it at the apostles' feet, that it might be distributed to each according to his need; and what saith the Scripture of that gathering of the saints? "They had one soul and one heart in the Lord." If charity made one soul of so many souls, and one heart of so many hearts, how great must be the charity between the Father and the Son! Surely it must be greater than that between those men who had one heart. If, then, the heart of many brethren was one by charity, if the soul of many brethren was one by charity, wouldst thou say that God the Father and God the Son are two? If they are two Gods, there is not the highest charity between them. For if charity is here so great as to make thy soul and thy friend's soul one soul, how can it be then that the Father and the Son is not one God? Far be unfeigned faith from this thought. In short, how excellent that charity is, understand hence: the souls of many men are many, and if they love one another, it is one soul; still, in the case of men, they may be called many souls, because the union is not so strong. But there it is right for thee to say one God; two or three Gods it is not right for thee to say. From this, the supreme and surpassing excellency of charity is shown thee to be such, that a greater cannot be.

[AD 430] Augustine of Hippo on John 3:34
"For He whom God hath sent speaketh the words of God." This, of course, he said of Christ, to distinguish himself from Christ. What then? Did not God send John himself? Did he not say himself, "I am sent before Him"? and, "He that sent me to baptize with water"? And is it not of John that it is said, "Behold, I send my messenger before Thee, and he shall prepare Thy way"? Does he not himself speak the words of God, he of whom it is said that he is more than a prophet? Then, if God sent him too, and he speaks the words of God, how do we understand him to have distinctly said of Christ, "He whom God hath sent speaketh the words of God"? But see what he adds: "For God giveth not the Spirit by measure." What is this, "For God giveth not the Spirit by measure"? We find that God does give the Spirit by measure. Hear the apostle when he says, "According to the measure of the gift of Christ." To men He gives by measure, to the only Son He gives not by measure. How does He give to men by measure? "To one is given by the Spirit the word of wisdom: to another the word of wisdom according to the same Spirit; to another faith by the same Spirit; to another prophecy; to another discerning of spirits; to another kinds of tongues; to another the gift of healing. Are all apostles? Are all prophets? Are all teachers? Are all workers of miracles? Have all the gift of healing? Do all speak with tongues? Do all interpret?" This man has one gift, that man another; and what that man has, this has not: there is a measure, a certain division of gifts. To men, therefore, it is given by measure, and concord among them makes one body. As the hand receives one kind of gift to work, the eye another to see, the ear another to hear, the foot another to walk; nevertheless the soul that does all is one, in the hand to work, in the foot to walk, in the ear to hear, in the eye to see; so are also the gifts of believers diverse, distributed to them as to members, to each according to his proper measure. But Christ, who gives, receives not by measure.

[AD 430] Augustine of Hippo on John 3:34
(Tr. xiv. c. 8) Christ then Himself is God the true, and God hath sent Him; God hath sent God, join both together; they are One God. For John saith, Whom God hath sent, to distinguish Christ from himself. What then, was not John himself sent by God? Yes; but mark what follows, For God giveth not the Spirit by measure unto Him. To men He giveth by measure, to His only Son He giveth not by measure. To one man is given by the Spirit the word of wisdom, to another the word of knowledge: one has one thing, another another; for measure implies a kind of division of gifts. But Christ did not receive by measure, though He gave by measure.

[AD 444] Cyril of Alexandria on John 3:34
The Father then knoweth that His own Son is in Him the Same by Nature (for this I suppose the words, are One, signify, and nothing else), and acknowledgeth Him as Son not creature; Son I mean of His own Essence, and not honoured with the bare name of Sonship. For He knows that He is the Exact Image of His own Proper Self, so that He is perfectly seen in Him, and depicts in Himself Him That by Nature Ineffably beamed forth from Him, and hath in Himself the Son, is again in the Son, by reason of Sameness of Essence.

These things, o heretic, by considering, thou shalt release thyself from bitter disease, and us from trouble in argument and controversy. For He Whom God hath sent speaketh the words of God. If these words be considered simply, what will there be of marvel in the Son? For was not every one of the holy Prophets also both sent from God, and did he not declare His words? And indeed it is somewhere said to the hierophant Moses, And now come, I will send thee into Egypt, and thou shalt say unto Pharaoh, Thus saith the Lord: to the most holy Jeremiah, Say not, I am a child: for thou shalt go to all that I shall send thee, and whatsoever I command thee thou shalt speak. What more then is there in the Son by Nature Who speaketh the words of God, because He is sent by Him? He will be declared to us again (it seems) as a Prophet, and nothing else, in respect of ministry. Therefore you will here understand hath sent, either in respect of the Incarnation and the Coming into this world with Flesh: or again you will take it in a more God-befitting and higher sense. For the Father hid not the Son in Himself, but He beamed forth of His Nature, as brightness from light, after the unspeakable and inexplicable mode of Divine Generation: which too the Only-Begotten was making known to us, in saying, I came forth from the Father, and am come. For the Son hath come forth from the Father into His Proper Being, even though He be in Him by Nature. And what I came forth there means, this again the being sent here signifies. The Word then (he says) That hath appeared and flashed forth from the Father, in that He is God of God, will use words befitting God: but the words befitting God are true words, and such as reject all stain of falsehood. He then that receiveth the testimony of the Saviour hath sealed that God is true; for He is indeed by Nature God.

For He giveth not the Spirit by measure. Promise now specially keen attention, my good friend, that with me you may wonder at the sober wisdom of the Saints. He said therefore that the Son was both sent of God, and speaketh the words of God. But he is observed as far as belongs to the simple force of the words to clothe Him with the prophetic measure, as we have just said. He: removes Him then in these words from equality with them, and through this one token gives us to understand, how great, yea, rather now how incomparable the difference. For it is impossible, saith he, that they who have received the Spirit by measure, could give It to another. For never hath saint to saint been the bestower of the Holy Ghost: but the Son giveth to all, as of His own fulness. He then giveth not by measure, nor hath He, as they, some little portion of the Spirit, and this by participation: but since He was shown to be the Giver too of It, it is manifest I suppose that He hath It wholly Essentially in Himself. He then that hath so great superiority over them, will not speak the. things of God as one of them, but being God of God, will pour forth words befitting God.

But it will no how interfere with what has been said that certain deem that by Apostolic hands the Spirit was given to some: for we will believe them to be invokers of the Spirit, rather than truly givers of It: since the blessed Moses too was not enjoined himself to take of the Spirit that was on him but God kept this too in His Power alone, saying that he must put forth the seventy, and promising to take of the Spirit that was on him, and put it upon them. For He knew that it befits God Alone to perform things God-befitting.