25 Circumcision has value if you observe the law, but if you break the law, you have become as though you had not been circumcised. 26 If those who are not circumcised keep the law’s requirements, will they not be regarded as though they were circumcised? 27 The one who is not circumcised physically and yet obeys the law will condemn you who, even though you have the written code and circumcision, are a lawbreaker.
28 A man is not a Jew if he is only one outwardly, nor is circumcision merely outward and physical. 29 No, a man is a Jew if he is one inwardly; and circumcision is circumcision of the heart, by the Spirit, not by the written code. Such a man’s praise is not from men, but from God. (Romans 2:25-9)

9 Is this blessedness only for the circumcised, or also for the uncircumcised? We have been saying that Abraham’s faith was credited to him as righteousness. 10 Under what circumstances was it credited? Was it after he was circumcised, or before? It was not after, but before! 11 And he received the sign of circumcision, a seal of the righteousness that he had by faith while he was still uncircumcised. So then, he is the father of all who believe but have not been circumcised, in order that righteousness might be credited to them. 12 And he is also the father of the circumcised who not only are circumcised but who also walk in the footsteps of the faith that our father Abraham had before he was circumcised.
13 It was not through law that Abraham and his offspring received the promise that he would be heir of the world, but through the righteousness that comes by faith. (Romans 4:9-13)

9 For in Christ all the fullness of the Deity lives in bodily form, 10 and you have been given fullness in Christ, who is the head over every power and authority. 11 In him you were also circumcised, in the putting off of the sinful nature, not with a circumcision done by the hands of men but with the circumcision done by Christ, 12 having been buried with him in baptism and raised with him through your faith in the power of God, who raised him from the dead.
13 When you were dead in your sins and in the uncircumcision of your sinful nature, God made you alive with Christ. He forgave us all our sins, (Colossians 2:9-13)

12 Those who want to make a good impression outwardly are trying to compel you to be circumcised. The only reason they do this is to avoid being persecuted for the cross of Christ. 13 Not even those who are circumcised obey the law, yet they want you to be circumcised that they may boast about your flesh. 14 May I never boast except in the cross of our Lord Jesus Christ, through which the world has been crucified to me, and I to the world. 15 Neither circumcision nor uncircumcision means anything; what counts is a new creation. 16 Peace and mercy to all who follow this rule, even to the Israel of God. (Galatians 6:12-16)