Galatians 2:3
but not even Titus, who is with me, being a Greek, was compelled to be circumcised --
Acts 16:3
this one did Paul wish to go forth with him, and having taken him, he circumcised him, because of the Jews who are in those places, for they all knew his father -- that he was a Greek.
Acts 15:24
seeing we have heard that certain having gone forth from us did trouble you with words, subverting your souls, saying to be circumcised and to keep the law, to whom we did give no charge,
1 Corinthians 9:20-21
and I became to the Jews as a Jew, that Jews I might gain; to those under law as under law, that those under law I might gain;
2 Corinthians 2:13
I have not had rest to my spirit, on my not finding Titus my brother, but having taken leave of them, I went forth to Macedonia;
Galatians 5:2-6
lo, I Paul do say to you, that if ye be circumcised, Christ shall profit you nothing;