There are a lot of articles claiming the public is scientifically illiterate, but this article is the first I’ve seen making assertions about biblical illiteracy. (I am pretty bible-illiterate, I must confess, and I do not post this to judge anyone).
As a general matter, I believe that most of us don’t know much about most of the issues we talk about. How could we? There’s hardly enough time for someone to become an expert in one area of knowledge, much less for all the issues that affect us and that merit discussion. Whenever we start feeling righteous about something we think we know well (whether the topic involve religion, politics, law, etc. etc.), it’s probably good that we remind ourselves there is so very much we don’t know.