Galatians 2:16–18

yet knowing that a man is not justified by the works of the law but through faith in Jesus Christ, even we believed in Christ Jesus, that we might be justified by faith in Christ and not by the works of the law, because no flesh will be justified by the works of the law. But if while we sought to be justified in Christ, we ourselves also were found sinners, is Christ a servant of sin? Certainly not! For if I build up again those things which I destroyed, I prove myself a law-breaker.