1Cor.9.19For though I am free from all, I have made myself a servant to all, that I might win more of them.
1Cor.9.20To the Jews I became as a Jew, in order to win Jews. To those under the law I became as one under the law (though not being myself under the law) that I might win those under the law.
1Cor.9.21To those outside the law I became as one outside the law (not being outside the law of God but under the law of Christ) that I might win those outside the law.
1Cor.9.22To the weak I became weak, that I might win the weak. I have become all things to all people, that by all means I might save some.
2John.1.8Watch yourselves, so that you may not lose what we have worked for, but may win a full reward.