Thematic Bible: Whose circumcision is made uncircumcision

For circumcision truly profits if you keep the Law, but if you are a transgressor of the Law, circumcision becomes uncircumcision. If then the uncircumcision keeps the ordinances of the Law, shall not his uncircumcision be counted for circumcision? And the uncircumcision which is by nature, if it fulfills the Law, shall it not judge you, who through letter and circumcision become transgressors of the Law?