Earlier quoted context omitted.
It is almost impossible to imagine that the writings of any long-lived society would not have ample quantities of "timeless wisdom". In fact it would be striking and unusual if it were otherwise. Much wisdom can be difficult to stumble upon but is self-evident once known. Long-lived societies are sure to import all such wisdom from around them, then discover more for themselves over time.
You're right; the main way that the bible (and by extension religion) is important in this regard is that it's survived, in various forms, for as long as it has. I kinda believe you need a religion to preserve knowledge and wisdom like this for so long. I mean tangentially related, a while ago there was an article about how to safeguard nuclear waste storage for the next 100.000 years; one suggestion was to create a…
Depends on how high you set the bar for 'survive'.
We have a few of the writing of Euclid, Archimedes and other Greeks, and mostly they weren't preserved for religious reasons.