Romans 3:20
20 because by the works of the Law no flesh will be justified in His sight, for through the Law comes the knowledge of sin.
Galatians 2:16
16 nevertheless knowing that a man is not justified by the works of the Law but through faith in Jesus Christ, even we have believed in Christ Jesus, so that we may be justified by faith in Christ and not by the works of the Law; since by the works of the Law no flesh will be justified.
Ephesians 2:8 - 2:10
8 For by grace you have been saved through faith, and this not of yourselves, it is the gift of God; 9 not of works, so that no one may boast. 10 For we are His workmanship, created in Christ Jesus for good works, which God prepared beforehand so that we would walk in them.