On October 31, 1517 Martin Luther posted his 95 Theses on the door of the church in Wittenberg, Germany. Exactly 500 years later, I am celebrating the great movement of God that followed his initial protest by posting his comments in full on this great passage in Galatians 5:1-6, six posts in a row. Here's what he had to say about verse 2...
VERSE 2. Behold, I Paul say unto you, that if ye be circumcised, Christ shall profit you nothing.
Paul is incensed at the thought of the tyranny of the Law. His antagonism to the Law is a personal matter with him. "Behold, I, Paul," he says, "I who have received the Gospel not from men, but by the revelation of Jesus Christ: I who have been commissioned from above to preach the Gospel to you: I Paul say to you, If you submit to circumcision Christ will profit you nothing." Paul emphatically declares that for the Galatians to be circumcised would mean for them to lose the benefits of Christ's suffering and death. This passage may well serve as a criterion for all the religions. To teach that besides faith in Christ other devices like works, or the observance of rules, traditions, or ceremonies are necessary for the attainment of righteousness and everlasting life, is to make Christ and His salvation of no benefit to anybody.
This passage is an indictment of the whole papacy. All priests, monks, and nuns—and I am now speaking of the best of them—who repose their hope for salvation in their own works, and not in Christ, whom they imagine to he an angry judge, hear this sentence pronounced against them that Christ shall profit them nothing. If one can earn the forgiveness of sins and everlasting life through one's own efforts to what purpose was Christ born? What was the purpose of His suffering and death, His resurrection, His victory over sin, death, and the devil, if men may overcome these evils by their own endeavor? Tongue cannot express, nor heart conceive what a terrible thing it is to make Christ worthless. The person who is not moved by these considerations to leave the Law and the confidence in his own righteousness for the liberty in Christ, has a heart that is harder than stone and iron.
Paul does not condemn circumcision in itself. Circumcision is not injurious to the person who does not ascribe any particular importance to it. Neither are works injurious provided a person does not attach any saving value to them. The Apostle does not say that works are objectionable, but to build one's hopes for righteousness on works is disastrous, for that makes Christ good for nothing.
Let us bear this in mind when the devil accuses our conscience. When that dragon accuses us of having done no good at all, but only evil, say to him: "You trouble me with the remembrance of my past sins; you remind me that I have done no good. But this does not bother me, because if I were to trust in my own good deeds, or despair because I have done no good deeds, Christ would profit me neither way. I am not going to make him unprofitable to me. This I would do, if I should presume to purchase for myself the favor of God and everlasting life by my good deeds, or if I should despair of my salvation because of my sins."
Luther, Martin. Commentary on the Epistle to the Galatians (pp. 141-142). Kindle Edition.