Treasury of Scripture Knowledge
Behold, I Paul say unto you, that if you be circumcised, Christ shall profit you nothing.
Since we have heard that certain who went out from us have troubled you with words, unsettling your souls, saying, You must be circumcised, and keep the law: to whom we gave no such commandment:
Him would Paul have to go forth with him; and took and circumcised him because of the Jews who were in those places: for they all knew that his father was a Greek.
1 Corinthians 9:20
And unto the Jews I became as a Jew, that I might gain the Jews; to them that are under the law, as under the law, that I might gain them that are under the law;