Romans 2:25

For circumcision is of value if you do the law, but if you should be a transgressor of the law, your circumcision has become uncircumcision.

Jeremiah 4:4

Circumcise yourselves to Yahweh, and remove the foreskins of your hearts, men of Judah and inhabitants of Jerusalem, lest my wrath goes forth like the fire and burns, and there is no [one who] extinguishes [it], because of the evil of your deeds."

Deuteronomy 30:6

"And Yahweh your God will circumcise your heart and the heart of your offspring to love Yahweh your God with all your heart and with all your inner self {so that you may live}.

Jeremiah 9:25-26

"Look, days [are] coming," {declares} Yahweh, "and I will call into account all those who are circumcised in [the] foreskin:

Acts 7:51

"[You] stiff-necked [people] and uncircumcised in hearts and in [your] ears! You constantly resist the Holy Spirit! As your fathers [did], [so] also [do] you!

Romans 2:23

Who boast in the law, by the transgression of the law you dishonor God!

Romans 2:28-2

For the Jew is not {one outwardly}, nor [is] circumcision {outwardly}, in the flesh.

Romans 4:11-12

And he received the sign of circumcision [as] a seal of the righteousness by faith which [he had] {while uncircumcised}, so that he could be the father of all who believe {although they are uncircumcised}, so that righteousness could be credited to them,

Galatians 5:3-6

And again I testify to every man who becomes circumcised, that he is under obligation to keep the whole law.

Galatians 6:15

For neither is circumcision anything nor uncircumcision, but a new creation.

Ephesians 2:11-12

Therefore remember that formerly you, the Gentiles in [the] flesh, the so-called uncircumcision by the so-called circumcision in [the] 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
Who boast in the law, by the transgression of the law you dishonor God!
Jeremiah 9:25
"Look, days [are] coming," {declares} Yahweh, "and I will call into account all those who are circumcised in [the] foreskin:
Acts 7:51
"[You] stiff-necked [people] and uncircumcised in hearts and in [your] ears! You constantly resist the Holy Spirit! As your fathers [did], [so] also [do] you!