14But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Cephas before them all, If thou, being a Jew, livest as do the Gentiles, and not as do the Jews, how compellest thou the Gentiles to live as do the Jews? 15We being Jews by nature, and not sinners of the Gentiles, 16yet knowing that a man is not justified by the works of the law but through faith in Jesus Christ, even we believed on Christ Jesus, that we might be justified by faith in Christ, and not by the works of the law: because by the works of the law shall no flesh be justified. 17But if, while we sought to be justified in Christ, we ourselves also were found sinners, is Christ a minister of sin? God forbid. 18For if I build up again those things which I destroyed, I prove myself a transgressor. 19For I through the law died unto the law, that I might live unto God. 20I have been crucified with Christ; and it is no longer I that live, but Christ liveth in me: and that life which I now live in the flesh I live in faith, the faith which is in the Son of God, who loved me, and gave himself up for me. 21I do not make void the grace of God: for if righteousness is through the law, then Christ died for nought.