Works to enter Heaven, I fail, what about you ?, page-34

They do differ in that eternal life is universal and saved is the quality of that eternal life.

As for Bible interpretation and delusions, well, the Bible attracts egomaniacs like sugar attracts ants. 70,000 + Christian sects and denominations suggests that those delusions are 100% universal. A JW said to me once that surely 1 Christian religion must be right to which I replied, WHY? If 69,999 were wrong the chances of that last religion being right is 70,000 to 1.

If an individual had a mastery of understanding the Bible it would do them no good because religion is group activity and the fact that they were knowledgable Christians in isolation means they were no knowledgable after all.