It is self-defeating having to explain the King James Bible or Shakespearean quotes that are intended to portray some human condition.
Even kids who religiously go to Sunday services with their mothers seem unaware of many biblical parables that were stock fodder at 1950s Sunday School.
I've given up qualifying an apparently generous charitable donation with the figurative shrug of "it's not not The Widow's Mite".***
***although there is apparently some debate about the exact meaning of that parable.