'Of the Circumcision' in the Bible

For before certain men came from James, he used to eat with the Gentiles; but when they came, he began to draw back and separate himself, fearing the party of the circumcision.

and also Jesus who is called Justus. These are the only men of the circumcision among my fellow workers for the kingdom of God, and they have proved to be a comfort to me.

For there are many rebellious men, empty talkers and deceivers, especially those of the circumcision.