Utopian:
If the understanding cannot be confirmed, it is not an understanding, it is an assertion. Is not faith "assured" hope in the things "expected", but not seen?
You're right on it. I also think that the only mesurement of salvation should be the faith and only the faith. That's the only thing that makes you really work for God, like contributing to humanitarian help (other than just "religious"), saving a life (not the eternal, as only Jesus/God can save it), or studying His word in its historical context (like understanding the word they used in the Bible that they understood at the times of the writers, and not trying to interpret those words (like Babylon the Great, an expression we should interpret in the context of the apostle John) as if they were said in our time.). The work a JW have to do is beyond what is asked in the Bible, and the gospel they preach is very far from the original.