Casting Pearls before Swine
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Matthew 7:6
Do not give dogs what is holy; do not throw your pearls before swine. If you do, they may trample them under their feet, and then turn and tear you to pieces.
Revelation 22:11
Let the unrighteous continue to be unrighteous, and the vile continue to be vile; let the righteous continue to practice righteousness, and the holy continue to be holy.”