'Uncircumcision' in the Bible

Circumcision [the sign of the covenant of Abraham] is indeed of value if you practice the Law; but if you habitually break the Law, your circumcision has become uncircumcision [it is meaningless in God’s sight].

So if the uncircumcised man keeps the requirements of the Law, will not his uncircumcision be regarded [by God] as circumcision?