"For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, lest anyone should boast. For we are His workmanship, created in Christ Jesus for good works, which God prepared beforehand that we should walk in them." (Ephesians 2:8-10)
"And if by grace, then it is no longer of works; otherwise grace is no longer grace. But if it is of works, it is no longer grace; otherwise work is no longer work." (Romans 11:6)
"But when the kindness and the love of God our Savior toward man appeared, not by works of righteousness which we have done, but according to His mercy He saved us, through the washing of regeneration and renewing of the Holy Spirit," (Titus 3:4-5)
"Therefore by the deeds of the law no flesh will be justified in His sight, for by the law is the knowledge of sin." (Romans 3:20)
"Knowing that a man is not justified by the works of the law but by faith in Jesus Christ, even we have believed in Christ Jesus, that we might be justified by faith in Christ and not by the works of the law; for by the works of the law no flesh shall be justified." (Galatians 2:16)
"Therefore let it be known to you, brethren, that through this Man [Jesus] is preached to you the forgiveness of sins; and by Him [Jesus] everyone who believes is justified from all things from which you could not be justified by the law of Moses." (Acts 13:38-39)