Does the Jew-Gentile distinction change the requirement of faith alone?

Les teaches from Romans that Paul had been almost screaming that salvation is faith plus nothing, or no salvation at all. If even a small thing is attached to the gospel of grace, it becomes a works religion. Christianity today is inundated with works religion in subtle forms; he gives the example of a lady drawn into New Age phenomena, which is based on works. When it is works, it cannot be grace. So whether Jew or Gentile, works is not grace. One must come God's way by faith, and faith alone. Then Ephesians 2:7 says the election obtained it, and the rest were blinded; God is sovereign and can do what He wants.