circumcision.

Romans 2:28, 29
A man is not a Jew because he is one outwardly, nor is circumcision only outward and physical. . . .

Romans 3:1, 2
What, then, is the advantage of being a Jew? Or what is the value of circumcision? . . .

Romans 4:11, 12
And he received the sign of circumcision as 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 are not circumcised, in order that righteousness might be credited to them. . . .

Deuteronomy 30:6
The LORD your God will circumcise your hearts and the hearts of your descendants, and you will love Him with all your heart and all your soul, so that you may live.

Jeremiah 4:4
Circumcise yourselves to the LORD, remove the foreskins of your hearts, O men of Judah and people of Jerusalem. Otherwise, My wrath will break out like fire and burn with no one to extinguish it, because of your evil deeds."

Galatians 5:3-6
Again I testify to every man who gets himself circumcised that he is obligated to obey the whole Law. . . .

Galatians 6:15
For neither circumcision nor uncircumcision means anything. What counts is a new creation.

Ephesians 2:11, 12
Therefore remember that formerly you who are Gentiles in the flesh and called uncircumcised by the so-called circumcision (that done in the body by human hands)-- . . .

but if.

Romans 2:23
You who boast in the Law, do you dishonor God by breaking the Law?

Jeremiah 9:25, 26
"Behold, the days are coming, " declares the LORD, "when I will punish all who are circumcised yet uncircumcised: . . .

Acts 7:51
You stiff-necked people with uncircumcised hearts and ears! You always resist the Holy Spirit, just as your fathers did.