Behold, I Paul say unto you, that if ye be circumcised, Christ shall profit you nothing.
Galatians 5:2
King James Version (public domain)
Traditionally attributed to Paul · 1st century AD · Thirteen epistles of the New Testament are traditionally attributed to him
Context
1Stand fast therefore in the liberty wherewith Christ hath made us free, and be not entangled again with the yoke of bondage.
2Behold, I Paul say unto you, that if ye be circumcised, Christ shall profit you nothing.
3For I testify again to every man that is circumcised, that he is a debtor to do the whole law.
4Christ is become of no effect unto you, whosoever of you are justified by the law; ye are fallen from grace.