Here. Be enlightened by St. Paul.....
Ephesians 2: 8 & 9 For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast.
Galatians 2:15 & 16 We ourselves are Jews by birth and not Gentile sinners; yet we know that a person is not justified by works of the law but through faith in Jesus Christ, so we also have believed in Christ Jesus, in order to be justified by faith in Christ and not by works of the law, because by works of the law no one will be justified.
Galatians 2: 20 & 21 I have been crucified with Christ. It is no longer I who live, but Christ who lives in me. And the life I now live in the flesh I live by faith in the Son of God, who loved me and gave himself for me. I do not nullify the grace of God, for if righteousness were through the law, then Christ died for no purpose.
Galatians 3:1 O foolish Galatians! Who has bewitched you? It was before your eyes that Jesus Christ was publicly portrayed as crucified. 2Let me ask you only this: Did you receive the Spirit by works of the law or by hearing with faith? 3 Are you so foolish? Having begun by the Spirit, are you now being perfected by the flesh? 4 Did you suffer so many things in vainif indeed it was in vain? 5Does he who supplies the Spirit to you and works miracles among you do so by works of the law, or by hearing with faith 6 just as Abraham "believed God, and it was counted to him as righteousness"?
7 Know then that it is those of faith who are the sons of Abraham. 8 And the Scripture, foreseeing that God would justify the Gentiles by faith, preached the gospel beforehand to Abraham, saying, "In you shall all the nations be blessed." 9 So then, those who are of faith are blessed along with Abraham, the man of faith.
10 For all who rely on works of the law are under a curse; for it is written, "Cursed be everyone who does not abide by all things written in the Book of the Law, and do them." 11 Now it is evident that no one is justified before God by the law, for "The righteous shall live by faith." 12 But the law is not of faith, rather "The one who does them shall live by them." 13 Christ redeemed us from the curse of the law by becoming a curse for usfor it is written, "Cursed is everyone who is hanged on a tree" 14 so that in Christ Jesus the blessing of Abraham might come to the Gentiles, so that we might receive the promised Spirit through faith.