From an atheist's perspective, I think most of what is written in the Bible has generally been discredited if taken merely as a factual or historically accurate book, though I'm quite sure those who avidly follow the Christian faith will strongly disagree - and why not if they believe in their god and faith?
However, irrespective of one's beliefs, if one is in need of moral guidance or simply needs examples of how one should behave toward their fellow man, then yes, the Bible is still relevant. The parables and positive messages, contained within the bible are mostly still as relevant today as they were when the first edition of the Bible was drafted!
Even for those who like myself have no religious beliefs, most of what we do and how decently we treat our fellow man is mostly down to the influence the Bible has had on our society and laws over the centuries.
Unfortunately, like most 'Holy ' books, it has also been commandeered/hijacked over the centuries for political and extremist policies by less than honest men for their own ends!