These are some relevant verses on the subject (WEB):
Justified by faith:
Romans 3:28)
We maintain therefore that a man is justified by faith apart from the works of the law.
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.
Romans 5:1)
Being therefore justified by faith, we have peace with God through our Lord Jesus Christ;
Galatians 2:16)
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
paul teachs faith and baptism same as Mk 16:16 acts 8:36-38
Heb 6:1 Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,
2 Of the doctrine of baptisms, and of laying on of hands, and of resurrection of the dead, and of eternal judgment.