Biblican, what Christians call "salvation," aka the saving of us from our sins, simply doesn't exist in Judaism. It's something Christians have made up. Judaism doesn't even consider the afterlife to be an important thing -- we obey God because he is God and worthy of being obeyed, not to gain heaven. Heck the Torah doesn't even mention the afterlife.
The point, Biblican, is that obedience of the Law of God is required of Jews. You get no sense of that from Paul or Christianity in general. Its more like, "do what you want, its your choice."