'Circumcision' in the Bible

For prior to the coming of certain men from James, he used to eat with the Gentiles; but when they came, he began to withdraw and hold himself aloof, fearing the party of the circumcision.

Behold I, Paul, say to you that if you receive circumcision, Christ will be of no benefit to you.

And I testify again to every man who receives circumcision, that he is under obligation to keep the whole Law.

For in Christ Jesus neither circumcision nor uncircumcision means anything, but faith working through love.

But I, brethren, if I still preach circumcision, why am I still persecuted? Then the stumbling block of the cross has been abolished.

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