{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.

People's New Testament

5:2 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, Christ shall profit you nothing. 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.

Wesley's Notes

5:2 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.

Jamieson-Fausset-Brown Bible Commentary

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 (Ga 5:4; Ac 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, Ac 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-(Ga 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].

Matthew Henry's Concise Commentary

5:1-6 Christ will not be the Saviour of any who will not own and rely upon him as their only Saviour. Let us take heed to the warnings and persuasions of the apostle to stedfastness in the doctrine and liberty of the gospel. All true Christians, being taught by the Holy Spirit, wait for eternal life, the reward of righteousness, and the object of their hope, as the gift of God by faith in Christ; and not for the sake of their own works. The Jewish convert might observe the ceremonies or assert his liberty, the Gentile might disregard them or might attend to them, provided he did not depend upon them. No outward privileges or profession will avail to acceptance with God, without sincere faith in our Lord Jesus. True faith is a working grace; it works by love to God, and to our brethren. May we be of the number of those who, through the Spirit, wait for the hope of righteousness by faith. The danger of old was not in things of no consequence in themselves, as many forms and observances now are. But without faith working by love, all else is worthless, and compared with it other things are of small value.