Circumcision is certainly of use, provided you keep the Law; but if you are a breaker of the Law, then your circumcision is turned into uncircumcision.
but since we know a man is justified simply by faith in Jesus Christ and not by doing what the Law commands, we ourselves have believed in Christ Jesus so as to get justified by faith in Christ and not by doing what the Law commands — for by doing what the Law commands no person shall be justified.
I tell you, he went home accepted by God rather than the other man; for everyone who uplifts himself will be humbled, and he who humbles himself will be uplifted."
Pure, unsoiled religion in the judgment of God the Father means this: to care for orphans and widows in their trouble, and to keep oneself from the stain of the world.