Matthew 7:6, 12-14
6 Do not give what is holy to dogs, and do not cast your pearls before swine, lest perhaps they may trample them under their feet, and then, turning, they may tear you apart.
12 Therefore, all things whatsoever that you wish that men would do to you, do so also to them. For this is the law and the prophets.
13 Enter through the narrow gate. For wide is the gate, and broad is the way, which leads to perdition, and many there are who enter through it.
14 How narrow is the gate, and how straight is the way, which leads to life, and few there are who find it!