Galatians 2:17-21

But if, while we sought to be justified in Christ, we ourselves also were found sinners, is Christ a minister of sin? God forbid. For if I build up again those things which I destroyed, I prove myself a transgressor. For I through the law died unto the law, that I might live unto God. I 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. I do not make void the grace of God: for if righteousness is through the law, then Christ died for nought.