Uses and Misuses of the Human Tongue

Where no wood is, there the fire goeth out: so where there is no talebearer, the strife ceaseth.
As coals are to burning coals, and wood to fire; so is a contentious man to kindle strife.
The words of a talebearer are as wounds, and they go down into the innermost parts of the belly.
Burning lips and a wicked heart are like a potsherd covered with silver dross.
He that hateth dissembleth with his lips, and layeth up deceit within him;  When he speaketh fair, believe him not: for there are seven abominations in his heart. Whose hatred is covered by deceit, his wickedness shall be shewed before the whole congregation.

Proverbs 26:20-26