Pearls Before Swine

This phrase keeps ringing in my ears today. I never knew it was a bible quote. I always thought it was one of Grandma Sophie's Yiddishisms!

Pearls before swine refers to a quotation from Matthew 7:6 in Jesus's Sermon on the Mount, implying that things (such as pearls) should not be put in front of people (or in this case, swine) who do not appreciate their value.
-Wikipedia