1 Corinthians 9:20

As a Jew (w Ioudaio). He was a Jew and was not ashamed of it ( Acts 18:18 ; Acts 21:26 ). Not being myself under the law (mh wn auto upo nomon). He was emancipated from the law as a means of salvation, yet he knew how to speak to them because of his former beliefs and life with them ( Galatians 4:21 ). He knew how to put the gospel to them without compromise and without offence.

Read 1 Corinthians 9:20