And I testify again to every man who becomes circumcised that he is a debtor to keep the whole law.
Galatians 5:3
Surrounding context
5:2 Indeed I, Paul, say to you that if you become circumcised, Christ will profit you nothing.
5:3 And I testify again to every man who becomes circumcised that he is a debtor to keep the whole law.
5:4 You have become estranged from Christ, you who attempt to be justified by law; you have fallen from grace.