The Bible is as important to literature and culture as it is to religion. Once you've read the KJV and the Anglican Book of Common Prayer, you see allusions to them everywhere. In the poetry of WB Yeats, in most English language novels until the post-WWII era. It's an important document and people should know it, even if they don't believe in it. Just like when I was a kid at Christian school they made us read some lit from other religions (Bhagavad Gita etc)