You walk into a group of new friends just in time to overhear an “inside joke.”
Chances are, you’ll laugh cautiously, indexing your reaction to what you see on the faces of the “insiders.” It would take a stoke of uncharacteristic boldness (for most people) to blurt out, “I don’t get it. Explain it to me.”
And so we go on, not getting it.
It is possible that people walking into church feel the same way about the Bible, or church customs?