The second of the Epistles, and the seventh book in the New Testament, is Paul's first letter to the Church in Corinth; I Corinthians. It was written when Paul was in the city of Ephesus, in modern-day Turkey, after he has heard about divisions in the Corinthian Church which he founded three years previously. There are reports of immoral behaviour and lawsuits between members, which Paul wishes to address. There are also questions concerning correct behaviour which Paul answers in his letter.
I Corinthians 9:20-22
"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; to them that are without law, as without law, (being not without law to God, but under the law to Christ,) that I might gain them that are without law. To the weak became I as weak, that I might gain the weak: I am made all things to all men, that I might by all means save some"