Paul’s discussions of circumcision, mainly in Galatians, Philippians and Romans, have been interpreted as being condemnation against the Torah, because the Law calls for circumcision for newborns and those wanting to participate in key parts of worship of God.
However, it must be remembered that circumcision by the first century A.D. had become an “identity marker” separating Jews from non-Jews. Like observance of Shabbat, circumcision was listed among the “works of [the] law” in the Dead Sea Scrolls that defined those separate from the corrupt religious system around the time of the first century. The rite of circumcision could be behind the division between Jewish and “unconverted” non-Jews that Paul dressed down Peter and the Galatian congregations in chapters 2 and 3 of this letter.