(I should clarify - I'm focusing here on what is essential to Christianity, not necessarily what is
essential for eternal salvation — a distinction some of you might think unnecessary, but a distinction which is probably a good topic for another post!)
Not exact matches
Much of what the west has long taken
for granted is now disappearing: the security provided by Christendom; the Christian way of interpreting reality; the confidence that the Christian path leads to
eternal salvation; and the belief that Christian doctrine embodies the
essential and unchangeable truths by which to live.
Rather, assuming that we agree with your premise — that people who believe these things remain unsaved — there is another entirely viable option: that it is not sufficient to believe these things apart from the promise of
eternal life by faith alone in Christ, but that these these are indeed
essential elements of the gospel that must be believed
for salvation.