Galatians 5: 1 - 6
1 For freedom Christ has set us free; stand fast therefore, and do not submit again to a yoke of slavery.
2 Now I, Paul, say to you that if you receive circumcision, Christ will be of no advantage to you.
3 I testify again to every man who receives circumcision that he is bound to keep the whole law.
4 You are severed from Christ, you who would be justified by the law; you have fallen away from grace.
5 For through the Spirit, by faith, we wait for the hope of righteousness.
6 For in Christ Jesus neither circumcision nor uncircumcision is of any avail, but faith working through love.

EWTN