Romans 2:25

For circumcision is indeed beneficial if thou perform law, but if thou are a transgressor of law, thy circumcision has become uncircumcision.

Deuteronomy 30:6

And LORD thy God will circumcise thy heart, and the heart of thy seed, to love LORD thy God with all thy heart, and with all thy soul, that thou may live.

Jeremiah 9:25-26

Behold, the days come, says LORD, that I will punish all those who are circumcised in [their] uncircumcision:

Acts 7:51

Ye stiff-necked and uncircumcised in heart and ears, ye do always resist the Holy Spirit. As your fathers, ye also.

Romans 2:23

Thou who boast in law, dishonor God by thy transgression of the law.

Romans 2:28-2

For he is not a Jew in what is visible, nor is circumcision in what is visible, in flesh,

Romans 4:11-12

And he received the sign of circumcision, as a seal of the righteousness of his faith during uncircumcision, for him to be father of all those who believe during uncircumcision (for righteousness to also be imputed to them),

Galatians 5:3-6

And I solemnly declare again to every man who is circumcised, that he is obligated to do the whole law.

Galatians 6:15

For in Christ Jesus neither circumcision avails anything nor uncircumcision, but a new creation.

Ephesians 2:11-12

Remember therefore that once ye, the Gentiles in flesh, who are called uncircumcision by that which is called circumcision (in flesh, made by hands),

Treasury of Scripture Knowledge

Summary

For circumcision verily profiteth, if thou keep the law: but if thou be a breaker of the law, thy circumcision is made uncircumcision.

Bible References

But if

Romans 2:23
Thou who boast in law, dishonor God by thy transgression of the law.
Jeremiah 9:25
Behold, the days come, says LORD, that I will punish all those who are circumcised in [their] uncircumcision:
Acts 7:51
Ye stiff-necked and uncircumcised in heart and ears, ye do always resist the Holy Spirit. As your fathers, ye also.