Proverbs 26:20
Without wood, the fire goes out; and where there is no secret talk, argument is ended.
Proverbs 16:28
A man of twisted purposes is a cause of fighting everywhere: and he who says evil secretly makes trouble between friends.
Proverbs 22:10
Send away the man of pride, and argument will go out; truly fighting and shame will come to an end.
James 3:6
And the tongue is a fire; it is the power of evil placed in our bodies, making all the body unclean, putting the wheel of life on fire, and getting its fire from hell.
Proverbs 26:22
The words of one who says evil of his neighbour secretly are like sweet food, they go down into the inner parts of the stomach.