Don’t be Foolish! - Proverb 29-30

Proverbs 30:32-33
If you have been foolish, exalting yourself,
or if you have been devising evil,
put your hand on your mouth.
For pressing milk produces curds,
pressing the nose produces blood,
and pressing anger produces strife.

Pride, arrogance and evil imagination are works of foolishness.  They begin in the heart of evil men and result in difficulty. All men are evil in their hearts. If no work is done in their lives to correct and redeem this evilness, it will burst forth. If, we have exalted ourselves or if we have evil thoughts, we should quickly cover our mouth, as to stop the arrogance before it spreads and to prevent the evilness before it breaks out. Foolishness portrays itself in many different ways. Many of the ways evilness shows itself are compounded by the tongue. The mouth is the gateway for the evil heart. Listen to the mouth and the heart will be made known. Close the mouth and slow the heart from proclaiming and, perhaps, practicing its evil.  For further reading look at Mark 7:14-23

Mark 7:14-23
And he called the people to him again and said to them, “Hear me, all of you, and understand: There is nothing outside a person that by going into him can defile him, but the things that come out of a person are what defile him.” And when he had entered the house and left the people, his disciples asked him about the parable. And he said to them, “Then are you also without understanding? Do you not see that whatever goes into a person from outside cannot defile him, since it enters not his heart but his stomach, and is expelled?” (Thus he declared all foods clean.) And he said, “What comes out of a person is what defiles him. For from within, out of the heart of man, come evil thoughts, sexual immorality, theft, murder, adultery, coveting, wickedness, deceit, sensuality, envy, slander, pride, foolishness. All these evil things come from within, and they defile a person.”

The mouth reveals the heart. If the mouth hurts others it comes from a heart full of hate.   You only have to be around a person for a short time and their lips will reveal their life.