As a thing that exists, it’s fine to mention the bible. Just like the Koran and Torah or anything else. It’s fine to say that some renaissance artist looked to the bible for inspiration on why that painted the thing. Or that wars were fought because some idiots on one side interpreted this book differently than some idiots on the other.

But to tell kids they need to follow things in the book and force each classroom to have one and erroneously say the founding fathers all believed in god and based everything on the bible? Nah dawg.