Thematic Bible: Whose circumcision is made uncircumcision

Circumcision will help you only if you observe the Law; but if you are a lawbreaker, you might as well be uncircumcised. So if people who are uncircumcised observe the requirements of the Law, will they not be treated as though they were circumcised? And if, although they are physically uncircumcised, they obey the Law, they will condemn you, who break the Law, although you have it in writing, and are circumcised.