Note that the person you're replying to did not say that the bible was ALL timeless wisdom, or really say much at all about the overall quality of the bible.
There's no contradiction between the bible containing lots of timeless wisdom AND containing lots of utter nonsense and complete bollocks.
Even as somebody who is an atheist and who generally finds religion to be a blight on our society, I think one can find "timeless wisdom" in the bible mixed in with the other stuff. Whether that, on balance, makes it worth investing time in or not is another question.
Then again, that is probably how it was and when I read the old viking stories they are equally - if not more violent.
I have also enjoyed reading both the Viking age Håvamål as well as the ancient Proverbs (as well as a number of other sources).
https://en.wikipedia.org/wiki/Harrowing_of_Hell
Catholic church takes care explain that officially (1):
http://www.vatican.va/archive/ccc_css/archive/catechism/p122...
Some people find that inconvenient.
However, many would say the entire compilation is a myth.
(I mean, I'm not a bible scholar; just... it was, you know, one of those times when I unintentionally gave offense, and seems like something you should be aware of if you are trying to avoid flame wars.)
What if it's true though?
The problem you have is that the converse would be objectionable to Christians as you'd be saying God's new covenant achieved nothing.
I'm just saying this was something I stepped in by accident and that you should be aware of it.