The interpretation timeline
2 Corinthians 3:17 Douay-Rheims

Now the Lord is a Spirit. And where the Spirit of the Lord is, there is liberty.

A.D. 397 – 1871 8 witnesses 9 excerpts

Patristic

before A.D. 750
397
A.D.
Ambrose of Milan Patristic
A.D. 339–397
“The same, then, is the Lord, who is the Spirit of the Lord; that is, he called the Spirit of the Lord, Lord, just as also the apostle says: "Now the Lord is a spirit, and where the Spirit of the Lord is, there is liberty." You have then, the Lord called also the Holy Spirit; for the Holy Spirit and the Son are not one person but one substance.”
Source
“As then young children, so the Jews also, are under a schoolmaster. The Law is our schoolmaster, the schoolmaster brings us to our Master; and our One Master is Christ: Neither be ye called masters, for one is your Master, even, Christ. The schoolmaster is feared, the Master shews the way of salvation. Thus fear brings us to liberty, liberty to faith, faith to love; love obtains adoption, adoption the inheritance. Where then faith is there is liberty; for the servant acts from fear, the free-man by faith; the one by the letter, the other by grace; the one in slavery the other by the Spirit; but where the Spirit of the Lord is, there is liberty.”
Source
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“But since some maintain that the expression, "when one shall turn to the Lord," is spoken of the Son, in contradiction to what is quite acknowledged; let us examine the point more accurately, having first stated the ground on which they think to establish this. What then is this? Like, saith one, as it is said, "God is a Spirit;" so also here, 'The Lord is a Spirit.' But he did not say, 'The Lord is a Spirit,' but, "The Spirit is the Lord." And there is a great difference between this construction and that. For when he is desirous of speaking so as you say, he does not join the article to the predicate. And besides, let us review all his discourse from the first, of whom hath he spoken? for instance, when he said, "The letter killeth, but the Spirit giveth life:" and again, "Written not with ink, but with the Spirit of the living God;" was he speaking of God, or of the Spirit? It is very plain that it was of the Spirit; for unto It he was calling them from the letter. For lest any, hearing of the Spirit, and then reflecting that Moses turned unto the Lord, but himself unto the Spirit, should think himself to have the worse, to correct such a suspicion as this, he says, "Now the Spirit Is the Lord." This too is Lord, he says. And that you may know that he is speaking of the Paraclete, he added, "And where the Spirit of the Lord is, there is liberty." For surely you will not assert, that he says, 'And where the Lord of the Lord is.' "Liberty," he said, with reference to the former bondage.”
Source

Scholastic

c. 1100 – 1500
1272
A.D.
Thomas Aquinas Catholic
1225–1274
“Having set down the things that pertain to the commendation of the gift received from God, here he consequently sets down the things that pertain to the commendation of the confidence conceived concerning this gift. Now concerning this he does two things. First, he sets down the confidence conceived from the gift; second, he compares the confidence of the old and the new testament, at *and not as Moses*. He says therefore first: *having therefore such hope* — namely from this, that it has been said to us, namely of seeing the glory of God, Rom. 8:24: *for by hope we are saved* — *we use much confidence*, that is, we work confidently at those things which pertain to the use of this ministry, from which hope grows in us. Prov. 28:1: *The just, like a confident lion, will be without terror.* Jer. 17:7: *Blessed is the man who trusts in the Lord.* Consequently, just as he preferred gift to gift, so he prefers the confidence of the new testament to the confidence of the old testament, when he says *and not as Moses, etc.* And concerning this he does two things: first he sets forth the deed in the old testament; second he explains it, at *which is done away, etc.* Now the deed which he sets forth is read in Exodus 34:34, where it is said that Moses, when he spoke to the people, veiled his face, because on account of the brightness of his countenance the children of Israel could not look upon him. And therefore he says *and not as Moses, etc.*, as if to say: I say that we use much confidence, and so much, that it does not happen to us as Moses did to them, namely by not revealing his face to the people, because the time for revealing the brightness of the truth had not yet come. We therefore have confidence without a veil. Consequently he explains what he had said about the veil, saying *which is done away, etc.* For that veil was the obscurity of the figures, which was done away through Christ. And concerning this he does three things. First he sets down the doing away of this veil; second, how this doing away has place among the Jews, at *but blunted, etc.*; third, how it has no place among the ministers of the new testament, at *but we with unveiled, etc.* He says therefore that Moses put a veil, namely of the figure, over his face, which — namely the veil — *is done away*, that is, it is taken away through Christ, namely by fulfilling in truth what Moses handed down in figure, because all things happened to them in figure. For thus Christ, through his death, removed the veil from the slaying of the paschal lamb, and therefore as soon as he gave up his spirit, the veil of the temple was torn. Likewise, in sending the Holy Spirit into the hearts of believers, that they might understand spiritually what the Jews understand carnally. And he removed this veil, when he opened their understanding, that they might understand the Scriptures, Lk., last chapter. But what effect this doing away has among the Jews, he shows, saying *but blunted, etc.* And concerning this he does two things. First he shows that it was not removed from them in the state of unbelief; second he shows that it will be removed at their conversion, at *but when it shall be converted, etc.* Concerning the first he does two things. First he shows the reason why this doing away has no place among the Jews; second, from this he shows that they still have the veil, at *but even to this present day, etc.* He says therefore that it is done away in those who believe, but not as regards the unbelieving Jews. And the reason for this is, because *their senses are blunted*, that is, their reason is dull, and their senses are weak and blunted, nor can they see the brightness of the divine light, that is, of the divine truth, without the veil of the figures. And the reason for this is that they close their eyes, so that they may not see that the veil of the temple has been torn. And therefore it is from their own fault of unbelief, not from a defect of the truth, because, the veil having been removed, to all who open the eyes of the mind through faith, the truth is most clearly manifested. Rom. 11:25: *blindness in part has happened in Israel.* Jn. 9:39: *for judgment I have come into this world, etc.* For thus Isaiah had prophesied in chapter 6: *blind the heart of this people, etc.* And truly their senses are so blunted, that even to this present day they do not understand the truth manifested to us. But that very veil, which was in the old testament, before the veil of the temple was torn, remains in the reading of the old testament, because they understand it no differently than before, because they still lean upon the figures, so that they do not reveal the truth, that is, they do not understand it; thus they believe the veil of God is not the figure, but the truth — which, namely, is done away as regards believers, and as far as is in itself, for all through Christ, that is, in the faith of Christ, but in them it does not remain, because they do not believe that Christ has come. Consequently when he says *but even to this present day, etc.*, he shows how the veil still exists among the Jews as regards unbelievers, although it has been removed through Christ. Concerning this it must be known, that a veil is said to be put upon someone in two ways: either because it is put upon the thing seen, so that it cannot be seen, or because it is put upon the one seeing, so that he may not see. But for the Jews, under the old law, the veil was put on in both ways. For both their hearts were blinded, lest they should know the truth, on account of their hardness, and the old testament was not yet completed, because the truth had not yet come. Hence, as a sign of this, the veil was on the face of Moses and not on their faces; but, when Christ came, the veil was removed from the face of Moses, that is, from the old testament, because it is now fulfilled, but nevertheless it is not removed from their hearts. And this is what he says *but even to this present day*, as if to say: the veil has been taken away from the believers of the old testament, but still, when Moses is read, that is, when the old testament is expounded to them — Acts 15:21: *Moses from ancient times has in every city those who preach him in the synagogues, etc.* — a veil, that is, blindness, is placed over their heart. Rom. 11:25: *blindness in part has happened, etc.* But when and how that veil is removed from them, he shows consequently, when he says *but when it shall be converted, etc.* And first he describes the manner of removing this veil; second he gives the reason for this, at *but the Lord is the Spirit, etc.* He says therefore, that that veil is still in them, not that the old testament is veiled, but because their hearts are veiled. And therefore, in order that it may be removed, nothing remains except that they be converted, and this is what he says *but when it shall have been converted*, namely someone of them to God through faith in Christ, from that very conversion the veil will be taken away. Isa. 10:21: *the remnant shall be converted, etc.* And this same thing is found in Rom. 9:27. And note, that when he was treating of blindness, he speaks in the plural, hence he says *over their hearts*; but when he speaks of conversion, he speaks in the singular, saying *but when it shall be converted*, in order to show their readiness toward evil, and their difficulty toward good, as if few are converted. But the reason why they should be converted, and the veil removed, is in this way, because God wills it. For someone could say, that that veil was put on by the precept of the Lord, and therefore it cannot be removed. But the Apostle shows, that it not only can be removed, indeed that it is removed by him who is the Lord. And this is what he says *for the Lord, etc.* This can be read in two ways. In one way, that "Spirit" be taken on the part of the subject, so that it is said: *the Spirit*, that is, the Holy Spirit, namely who is the author of the law, *is the Lord*, that is, he works from his own free choice. Jn. 3:8: *the spirit breathes where it wills.* 1 Cor. 12:11: *dividing to each as he wills.* *But where the Spirit of the Lord is, there is liberty*; as if to say: because the Spirit is the Lord, he can give liberty, that we may be able to use the Scripture of the old testament freely, without a veil. And therefore, those who do not have the Holy Spirit, cannot use it freely. Gal. 5:13: *you have been called unto liberty.* 1 Pet. 2:16: *as free, and not as having liberty as a veil of malice.* In another way, that by "Lord" Christ be understood, and then it is read thus: *the Lord*, that is, Christ, *is spiritual*, that is, a spirit of power, and therefore *where the Spirit of the Lord is* — that is, the law of Christ understood spiritually, not written in letters, but impressed on hearts through faith — *there is liberty*, from every hindrance of the veil. But it must be known, that on occasion of these words, namely *where the Spirit of the Lord is, there is liberty*, and of those, namely *the law is not laid down for the just*, some have erroneously said that spiritual men are not bound by the precepts of the divine law. But this is false; for the precepts of God are the rule of the human will. But there is no man, nor even an Angel, whose will it is not necessary to be regulated and directed by the divine law. Hence it is impossible for any man not to be subject to the precepts of God. But this that is said, *the law is not laid down for the just*, is explained thus: that is, on account of the just, who are moved by an interior habit to those things which the law of God commands, the law is not laid down; but on account of the unjust — not but that the just also are bound to it. And likewise *where the Spirit of the Lord is, there is liberty* is understood, because he is free who is his own cause; but a servant is for the sake of a master. Whoever therefore acts from himself, acts freely; but he who is moved by another, does not act freely. He therefore, who avoids evils, not because they are evil, but on account of the commandment of the lord, is not free; but he who avoids evils, because they are evil, is free. But this the Holy Spirit does, who perfects the mind inwardly through a good habit, so that thus he takes care out of love, as if the divine law commanded it; and therefore he is called free, not but that he is subject to the divine law, but because from a good habit he is inclined to do this, which the divine law ordains. Then, when he says *but we all, etc.*, he shows how the faithful of Christ are entirely free from this veil. He says therefore: I say that this veil is taken away from them, when someone shall have been converted as we are — not merely someone, but all of us who are faithful of Christ. Lk. 8:10: *to you it has been given, etc.* *With face unveiled*, not having a veil over the heart, as they do. And by "face" is understood the heart, or the mind, because just as by the face one sees bodily, so by the mind one sees spiritually. Ps. 118:18: *uncover my eyes, etc.* *The glory of the Lord*, not of Moses: for glory signifies brightness, as Augustine says. But the Jews saw a certain glory in the face of Moses from this, that he had spoken with God. But this glory is imperfect, because it is not the brightness by which God himself is glorious; and this is to know God himself. Or *the glory of the Lord*, that is, the Son of God. Prov. 10: *the glory of a father is a wise son, etc.* *Beholding* is not taken here from a watchtower, but from a mirror, that is, knowing the glorious God himself through the mirror of reason, in which there is a certain image of him. And we behold him thus when a man, from consideration of himself, rises up into some knowledge of God, and is transformed. For since all knowledge is through an assimilation of the knower to the known, it is necessary that those who see be transformed in some way into God. And if indeed they see perfectly, they are perfectly transformed, as the blessed in the fatherland through the union of enjoyment, 1 Jn. 3:2: *but when he shall appear, etc.* But if imperfectly, imperfectly, as here through faith, 1 Cor. 13:12: *we see now through a mirror in an enigma.* And therefore he says *into the same image*, that is, as we see, *we are transformed*, I say, *from brightness into brightness*, in which he distinguishes a threefold degree of knowledge in the disciples of Christ: the first is from the brightness of natural knowledge into the brightness of the knowledge of faith. The second is from the brightness of the knowledge of the old testament, into the brightness of the knowledge of the grace of the new testament. The third is from the brightness of natural knowledge and of the old and new testament, into the brightness of eternal vision. Below, 4:16: *although the one who is outward, etc.* But whence is this? Not from the letter of the law, but as from the Spirit of the Lord. Rom. 8:14: *whoever are led by the Spirit of God.* Ps. 142:10: *your good spirit shall lead, etc.*”

Reformation

c. 1500 – 1650
1637
A.D.
1567–1637
“Now the Lord is that Spirit (1.) The Father, Son, and Holy Spirit are not body but spirit. Spirit in this explanation is taken essentially for what is common to the Three Persons. So S. Ambrose. (2.) Spirit here may stand for the Holy Spirit: the Greek MSS. have the definite article, and Roman Bibles and others spell it with a capital; for the Jews acknowledge one Lord and God, but deny that there is a plurality of Persons, and that the Holy Spirit is God. When the Jews shall have the veil taken away and shall be converted to the Lord and to belief in the Blessed Trinity, then will they serve the Lord their God, not in the letter, with dumb corporeal ceremonies, but in the spirit. The God to whom they shall be converted is Spirit, and the Holy Spirit will give them the law of the Spirit of liberty, that with the eyes of their spirit they may see Christ veiled, under the law, and may worship Him in spirit and in truth. C£ S. John iv. 23. S. Augustine (ad Serapion) thus explains this last passage : “ We must worship the Father in WORSHIP IN THE SPIRIT 35 truths i.e., in the Son and Holy Spirit We must worship the Three Persons of the Holy Trinity , the Father , Son, and Holy Spirit ” But this is the mystical meaning. Literally, Christ said this against the Samaritans and Jews; for the Samaritans worshipped God with worship that was false and devised by themselves, and so worshipped God together with idols ; consequently the God of their worship was not the true God, but a created god of their imaginations, and the companion of idols. The Jews worshipped the true God indeed, but under fixed corporeal signs, which were shadows of things to come. To both of these Christ opposes Christians, who worship God in spirit and not in corporeal signs, and in truth instead of in shadows, falsehood, and ignorance. God is an incorporeal and pure Spirit. Spirit, therefore, in this passage denotes the spiritual worship of faith, hope, charity, and other virtues, by which God is worshipped in truth, i.e.) most truly, rightly, and properly, and not by shadows. Wherefore the sacraments and ceremonies of the New Law, since they are not shadows of the Old Law, but ornaments and helps of the Spirit, belong to the Spirit Theophylact, Theodoret, Chrysostom thus explain the passage, and prove from it against Macedonius that the Holy Spirit is God. It may be said that the same Spirit is afterwards called “the Spirit of the Lord.” How, then, is He the Lord? The answer is: He is “the Lord” because He is God; He is “of the Lord” because He proceeds from the Father and the Son. And where the Spirit of the Lord is t there is liberty . Liberty denotes a spontaneous, frank, free, and clearly illuminated will. Now that the veil of Moses has been taken away, we can, wiih clear and spontaneous will, walk according to the law of God. So Theophylact Notice that liberty is not here opposed to the obligation of law, Divine or human, as heretics think, but both to the veil of Moses, or the obscurity of the Old Law, and to the letter, or to the servile compulsion, fear, and deadness of the law. This liberty, therefore, is twofold. See notes to ver. 6. 36 SECOND EPISTLE TO THE . Liberty is, says Chrysostom, an understanding and clear knowledge of the mystery of the Trinity, of the incarnation, and bther things that are obscure to the Jews. It is also a knowledge of true religion and of Divine worship, which the Jews supposed to consist in the sacrifice of bulls and goats, though God wills to be worshipped in spirit and in truth. Just as heaviness, dulness, perplexity, and ignorance of the understanding, which hold the mind as it were fast bound in chains, are rightly called slavery, so on the other hand illumination of the intellect and clear knowledge are rightly called liberty, because the mind, set free from ignorance, error, and crass conceptions, is able to freely devote itself to truth, to God, to things spiritual and Divine. Hence Aristotle, Plutarch, Seneca, and others used to say that the wise man alone was free. 2. Liberty, as S. Augustine says, is to be found in the affections and in the love of righteousness, in freedom from fear of punishment, in the spontaneous fulfilling of the law from love of virtue, and not from fear of punishment This free spirit of Christian love is contrasted with the slavery of Jewish fear. This is evident from the context The Begardi, three hundred years ago, and the Suencfeldiani and Libertines of the present day, are therefore as impious, as ignorant, and foolish (a) in rejecting, on the supposed authority of ver. 6, the written word of God, as though it were a sun that had set, and in holding that the light within is sufficient for our guidance; {b) in teaching that a holy and perfect man is set free from the law and does not sin, even if he commit fornication. (c) They are followed by many others, who deduce the invalidity of all human laws. C£ Bellarmice {de Justific. lib. iv. c. 3 and 4), and Belliolanus, in the fifteen books he wrote on Christian Liberty. S. Augustine {de Confinentia, c. iii.) says excellently: “We are not under a law which orders good and does not give it, but we are under grace, which makes us love what the law orders, and which can, therefore, give orders to free men. n Cf. the same Father {de Spirit et Lit. c. x., and de Natura et Grat c. 57)”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Now the Lord is that Spirit,.... "The Lord", to whom the heart is turned, when the veil is removed, is Jesus Christ; and he is "that Spirit", or "the Spirit": he, as God, is of a spiritual nature and essence; he is a spirit, as God is said to be, Joh 4:24 he is the giver of the Spirit of God, and the very life and spirit of the law, without whom as the end of it, it is a mere dead letter: or rather as by Moses in Co2 3:15 is meant, the law of Moses, so by the "Lord" here may be meant the Gospel of Christ: and this is that Spirit, of which the apostles were made ministers, and is said to give life, Co2 3:6. And where the Spirit of the Lord is, there is liberty; which may be understood of the third person in the Godhead; where he is as a spirit of illumination, there is freedom from former blindness and darkness; where he is as a spirit of regeneration and sanctification, there is freedom from the bondage of sin, and captivity of Satan; where he is as a comforter, there is freedom from the fear of hell, wrath, and damnation: where he is as a spirit of adoption, there is the freedom of children with a father; where he is as a spirit of prayer and supplication, there is liberty of access to God with boldness, Though rather the Gospel as attended with the Spirit of God, in opposition to the law, is here designed; and which points out another difference between the law and the Gospel; where the law is, there is bondage, it genders to it; it has a natural tendency to it: quite contrary is this to what the Jews (i) say, who call the law, "liberty": and say, "that he that studies in the law, hath , "freedom from everything":'' whereas it gives freedom in nothing, but leads into, and brings on persons a spirit of bondage; it exacts rigorous obedience, where there is no strength to perform; it holds men guilty, curses and condemns for non-obedience; so that such as are under it, and of the works of it, are always under a spirit of bondage; they obey not from love, but fear, as servants or slaves for wages, and derive all their peace and comfort from their obedience: but where the Gospel takes place under the influence of the Spirit of God, there is liberty; not to sin, which is contrary to the Gospel, to the Spirit of God in believers, and to the principle of grace wrought in their souls; but a liberty from the bondage and servitude of it: a liberty from the law's rigorous exaction, curse, and condemnation, and from the veil of former blindness and ignorance. (i) Zohar in Gen. fol. 90. 1. & in Exod. fol. 72. 1. & in Numb. fol. 73. 3.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“Now the Lord is that Spirit - In Co2 3:6, Co2 3:8, the word το πνευμα, spirit, evidently signifies the Gospel; so called because it points out the spiritual nature and meaning of the law; because it produces spiritual effects; and because it is especially the dispensation of the Spirit of God. Here Jesus Christ is represented as that Spirit, because he is the end of the law for justification to every one that believes; and because the residue of the Spirit is with him, and he is the dispenser of all its gifts, graces, and influences. And where the Spirit of the Lord is - Wherever this Gospel is received, there the Spirit of the Lord is given; and wherever that Spirit lives and works, there is liberty, not only from Jewish bondage, but from the slavery of sin - from its power, its guilt, and its pollution. See Joh 8:33-36 (note), and the notes there.”
Source
1849
A.D.
1774–1849
“Now the Lord is a Spirit. Many expound it, the Spirit is the Lord. And where this Lord and this Spirit is, there is liberty; i.e. by this Spirit, they who are sanctified are freed from the slavery of sin and the devil. (Witham) — We must recollect what he had said before, that the letter killeth and that the Spirit giveth life; that by the Spirit was meant the gospel, and by the letter was meant the law of Moses. Here he says that God is the Spirit, in opposition to the law of Moses; that he is the Author of the liberty of the children of God, in the new law; that in the new law are found the true adorers in spirit and truth, in opposition to the spirit of servitude which animated the Jews. (Calmet)”
Source
1871
A.D.
1871
“the Lord--Christ (Co2 3:14, Co2 3:16; Co2 4:5). is that Spirit--is THE Spirit, namely, that Spirit spoken of in Co2 3:6, and here resumed after the parenthesis (Co2 3:7-16): Christ is the Spirit and "end" of the Old Testament, who giveth life to it, whereas "the letter killeth" (Co1 15:45; Rev 19:10, end). where the Spirit of the Lord is--in a man's "heart" (Co2 3:15; Rom 8:9-10). there is liberty-- (Joh 8:36). "There," and there only. Such cease to be slaves to the letter, which they were while the veil was on their heart. They are free to serve God in the Spirit, and rejoice in Christ Jesus (Phi 3:3): they have no longer the spirit of bondage, but of free sonship (Rom 8:15; Gal 4:7). "Liberty" is opposed to the letter (of the legal ordinances), and to the veil, the badge of slavery: also to the fear which the Israelites felt in beholding Moses' glory unveiled (Exo 34:30; Jo1 4:18).”
Source
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.