I'm finding more and more often that people seem to not know things that I thought everyone knew. I think it's because of "information silos" where people don't seek out other sources of information and miss things.
In school, they used to teach certain classic areas of knowledge in history and literature, but now they don't do that any more. Also, young people, who may be in those "silos" may not realize the scope of what they don't know.
Wait until he learns about Noah and his ark!
@Pat Hmm but even in general knowledge haha! Same for me, never had anything with religion but I do know some basics