Romans 2:25
Now the practice of circumcision [i.e., the Jewish rite of identity, signifying the responsibility to observe the law of Moses] is worthwhile, providing you obey [the rest of] the law of Moses. But if you disobey the law, you might as well have never been circumcised.
Acts 7:51
You people are unbending and unrepentant in your hearts and [unwilling to listen with] your ears. You are always resisting [the desires of] the Holy Spirit just like your forefathers did.
Romans 2:23
You boast about having the law of Moses, [but] do you dishonor God by breaking that law?
Romans 2:28-2
For that person is not a Jew who is one [merely] on the outside. And circumcision is not [merely] an outward physical ordinance.
Romans 4:11-12
He received the sign of circumcision as a seal [confirming] that he had been [considered] righteous because of the faith he had before being circumcised. Thus, he became the [spiritual] father of all people who believe [in God], even though they have not been circumcised, so that they could be considered righteous [by their faith].
Galatians 5:3-6
Yes, I declare to every person who attempts to require circumcision [as a means of gaining acceptance with God], that he must also obey everything else required by the law of Moses.
Galatians 6:15
For it does not matter whether a person practices circumcision or refrains from practicing it; what really matters is [whether or not he is] a new creature [in the eyes of God].
Ephesians 2:11-12
So, you Gentiles by birth should remember what you once were. You are called "Uncircumcision" by those who are called "Circumcision" [i.e., the Jews], (which refers to a physical procedure performed by people).