Perry,
Jews have never had either a doctrine of "Original Sin" or a doctrine of "salvation." What you are talking about is how Christians have reinterpreted (and in some cases mistranslated) certain Jewish texts.
But regardless of the interpretations or renderings, Jews still don't have such doctrines.
For instance, you mention "works" being advocated by the Jehovah's Witnesses as a requisite to salvation. Did you know that it is a misconception that Jews believe that works of the Mosaic Law can gain salvation?
It's simple:
a. Jews have no doctrine of Original Sin
b. Jews therefore see no need for gaining salvation
c. There is no such theological concept of "works" of the Law in Judaism
d. Obedience to the Law (or as we Jews call it, being Torah-observant) provides no merit
e. Ezekiel 18 declares that the sin of parents cannot be visited upon children and that an individual can repent of the wickedness and be judged righteous without any type of sacrifice
While I understand the Christian viewpoint and your need to explain your view, it still doesn't change the fact that what you believe is not what Jews or their Scriptures teach, which is the point I was making.
And besides, with all due respect, I was not trying to counter your beliefs as a Christian. It does not violate your views to declare that the Jews who wrote the Hebrew Tanakh had no concept of Original Sin or held to a theology of personal salvation since Christian belief is that such views were introduced by Jesus of Nazareth. That being so, it would be expected that no such declarations would be found in any immediate reading of any Jewish religious texts.