Matthew 7 : 6, 12-14

Do not give what is holy to the dogs, or throw your pearls to the pigs : they might trample on them, and even turn on you and tear you to pieces.

So, do to others whatever you would that others do to you : there you have the Law and the Prophets. Enter through the narrow gate : for wide is the gate and broad is the road that leads to destruction, and many go that way. How narrow is the gate that leads to life, and how rough the road; few there are who find it.