Behold, I Paul. He could not have pronounced a severer threatening than that it would exclude them entirely from the grace of Christ. But what is the meaning of this, that Christ will profit nothing to all who are circumcised? Did Christ profit nothing to Abraham? Nay, it was in order that Christ might profit him that he received circumcision. If we say that it was in force till the coming of Christ, what reply shall we make to the case of Timothy? We must observe, that Paul's reasoning is directed not so properly against the outward rite or ceremony, as against the wicked doctrine of the false apostles, who pretended that it was a necessary part of the worship of God, and at the same time made it a ground of confidence as a meritorious work. These diabolical contrivances made Christ to profit nothing; not that the false apostles denied Christ, or wished him to be entirely set aside, but that they made such a division between his grace and the works of the law as to leave not more than the half of salvation due to Christ. The apostle contends that Christ cannot be divided in this way, and that he "profiteth nothing," unless he is wholly embraced. And what else do our modern Papists but thrust upon us, in place of circumcision, trifles of their own invention? The tendency of their whole doctrine is to blend the grace of Christ with the merit of works, which is impossible. Whoever wishes to have the half of Christ, loses the whole. And yet the Papists think themselves exceedingly acute when they tell us that they ascribe nothing to works, except through the influence of the grace of Christ, as if this were a different error from what was charged on the Galatians. They did not believe that they had departed from Christ, or relinquished his grace; and yet they lost Christ entirely, when that important part of evangelical doctrine was corrupted. The expression Behold, I Paul, is very emphatic; for he places himself before them, and gives his name, to remove all appearance of hesitation. And though his authority had begun to be less regarded among the Galatians, he asserts that it is sufficient to put down every adversary.

Behold, I Paul say unto you - I, who at first preached the gospel to you; I, too, who have been circumcised, and who was formerly a strenuous assertor of the necessity of observing the laws of Moses; and I, too, who am charged (see Galatians 5:11) with still preaching the necessity of circumcision, now solemnly say to you, that if you are circumcised with a view to being justified by that in whole or in part, it amounts to a rejection of the doctrine of justification by Christ, and an entire apostacy from him. He is to be "a whole Saviour." No one is to share with him in the honor of saving people; and no rite, no custom, no observance of law, is to divide the honor with his death. The design of Paul is to give them the most solemn assurance on this point; and by his own authority and experience to guard them from the danger, and to put the matter to rest.
That if ye be circumcised - This must be understood with reference to the subject under consideration. If you are circumcised with such a view as is maintained by the false teachers that have come among you; that is, with an idea that it is necessary in order to your justification. He evidently did not mean that if any of them had been circumcised before their conversion to Christianity; nor could he mean to say, that circumcision in all cases amounted to a rejection of Christianity, for he had himself procured the circumcision of Timothy, Acts 16:3. If it was done, as it was then, for prudential considerations, and with a wish not necessarily to irritate the Jews, and to give one a more ready access to them, it was not to be regarded as wrong. But if, as the false teachers in Galatia claimed, as a thing essential to salvation, as indispensable to justification and acceptance with God, then the matter assumed a different aspect; and then it became in fact a renouncing of Christ as himself sufficient to save us. So with anything else. Rites and ceremonies in religion may be in themselves well enough, if they are held to be matters not essential; but the moment they are regarded as vital and essential, that moment they begin to infringe on the doctrine of justification by faith alone, and that moment they are to be rejected; and it is because of the danger that this will be the case, that they are to be used sparingly in the Christian church. Who does not know the danger of depending upon prayers, and alms, and the sacraments, and extreme unction, and penance, and empty forms for salvation? And who does not know how much in the papal communion the great doctrine of justification has been obscured by numberless such rites and forms?
Christ shall profit you nothing - Will be of no advantage to you. Your dependence on circumcision, in these circumstances, will in fact amount to a rejection of the Saviour, and of the doctrine of justification by him.

If ye be circumcised - By circumcision you take on you the whole obligation of the Jewish law, and consequently profess to seek salvation by means of its observances; and therefore Christ can profit you nothing; for, by seeking justification by the works of the law, you renounce justification by faith in Christ.

(1) Behold, I Paul say unto you, that if ye be (a) circumcised, Christ shall profit you nothing.
(1) Another entreaty in which he plainly witnesses that justification of works, and justification of faith cannot stand together, because no man can be justified by the Law, but he that does fully and perfectly fulfil it. And he takes the example of circumcision, because it was the ground of all the service of the Law, and was chiefly urged by the false apostles.
(a) Circumcision is in other places called the seal of righteousness, but here we must have consideration of the circumstance of the time, for now baptism is a sign of the new covenant, just as circumcision was the sign of the old covenant. And moreover Paul reasons according to the opinion that his enemies had of it, which made circumcision a essential to their salvation.

Behold, I Paul say unto you,.... The apostle proceeds to give some reasons and arguments to enforce the above exhortation and dissuasion: the first of which is introduced with a note of attention, "behold"; what he was about to say being matter of great moment and importance; and also mentions himself by name, as the assertor of it; and that, either because his name was well known to them, and the rather because of his apostolical authority; and to show his full assurance of this matter, and his intrepidity, and that he was no ways ashamed of it, they might, if they pleased, say it to whomsoever they would, that Paul the apostle affirmed,
that if ye be circumcised Christ shall profit you nothing: he speaks of circumcision, not as when it was an ordinance of God, but as it was now abolished by Christ; and that got as singly performed on some certain accounts for he himself circumcised Timothy for the sake of the Jews; but as done in order to salvation, or as necessary unto it; which was the doctrine the false apostles taught and these Galatians were ready to give into: now circumcision submitted to on this consideration, and with this view rendered Christ unprofitable, made his death to be in vain, his sacrifice of no effect, and his righteousness useless: besides, Christ is a whole Saviour, or none at all; to join anything with him and his righteousness, in the business of justification and salvation, is interpreted by him as a contempt and neglect of him, as laying him aside, and to such persons he is of no profit; and if he is not, what they have, and whatsoever they do, will be of no advantage; wealth and riches, yea, the whole world could it be gained, their works and righteousness, whatever show they make before men, God has declared shall not profit them; and trusting to these renders Christ unprofitable to them. This is directly contrary to the notions of the Jews, who think they shall be saved for their circumcision, and that that will secure them from hell; they say (m) no circumcised person goes down to hell, and that whoever is circumcised shall inherit the land; but there is none shall inherit the land, save a righteous person; but everyone that is circumcised is called a righteous man (n); so that circumcision is their righteousness, on account of which they expect heaven and happiness.
(m) Shemot Rabba, sect. 19. fol. 104. 4. (n) Zohar in Exod. fol. 10. 2.

Behold--that is, Mark what I say.
I Paul--Though you now think less of my authority, I nevertheless give my name and personal authority as enough by itself to refute all opposition of adversaries.
if ye be circumcised--not as ALFORD, "If you will go on being circumcised." Rather, "If ye suffer yourselves to be circumcised," namely, under the notion of its being necessary to justification (Galatians 5:4; Acts 15:1). Circumcision here is not regarded simply by itself (for, viewed as a mere national rite, it was practiced for conciliation's sake by Paul himself, Acts 16:3), but as the symbol of Judaism and legalism in general. If this be necessary, then the Gospel of grace is at an end. If the latter be the way of justification, then Judaism is in no way so.
Christ . . . profit . . . nothing-- (Galatians 2:21). For righteousness of works and justification by faith cannot co-exist. "He who is circumcised [for justification] is so as fearing the law, and he who fears, disbelieves the power of grace, and he who disbelieves can profit nothing by that grace which he disbelieves [CHRYSOSTOM].

Behold, I Paul. He makes emphatic what he is about to say, by repeating his name, so familiar to his own converts.
If ye be circumcised. Their circumcision, under the circumstances, would be the sign of their submission to the law of Moses. They, Gentile Christians, could not thus become Jews and remain Christians. It would be proof of trust in Moses rather than Christ, in the law rather than in the gospel.
I testify again. He shows them that if one becomes circumcised to keep the law of Moses, that he is placed under obligation to keep the whole law, since other commandments are equally binding.
Christ is become of no effect unto you. If you be circumcised in order to keep the Mosaic law (Galatians 5:2).
Ye are fallen from grace. By resorting to the law for salvation.
For we. We Christians, who trust in the gospel.
Through the Spirit. Not through carnal ordinances, but strengthened by the Spirit we wait For the fulfillment of the hope which righteousness by faith instead of the law insures to us.
For in Christ Jesus, etc. It made no difference in the sight of God whether a Christian was a circumcised Jew or an uncircumcised Gentile. Both stood on the same footing. It did make a great difference, though, if the Gentile Christian became circumcised in order to keep the law (Galatians 5:2). It is true Paul circumcised Timothy, but it was not to keep the law. See notes on Galatians 2:3.
But faith availeth--the faith in Christ; the faith which uses love as its medium and method of working. There is first faith in Christ; then the love of Christ.

If ye be circumcised - And seek to be justified thereby. Christ - The Christian institution. Will profit you nothing - For you hereby disclaim Christ, and all the blessings which are through faith in him.