1 Corinthians 9:19-20

AUV(i) 19 For although I am free from [being accountable to] all people, I placed myself under obligation to them [as a slave], so as to win as many as possible [to Christ]. 20 I behaved like a Jew in front of the Jews in order to win Jews [to Christ]. I behaved like a person who was under [obligation to observe] the law [i.e., Jews] in front of those who observe that law, although I was not [really] under [obligation to] it. I did this to win those who are under [obligation to observe] the law.