Ephesians 4:29
Never let any foul word pass your lips, but only such good words as the occasion demands, that they may be a help to those who hear them.
Matthew 12:35-37
A good man, from his good stores, produces good things; while an evil man, from his evil stores, produces evil things.
Colossians 4:6
Let your conversation always be kindly, and seasoned, as it were, with salt; that you may know in each case what answer you ought to give.
Titus 1:10-11
There are, indeed, many unruly persons--great talkers who deceive themselves, principally converts from Judaism,
James 3:6-9
And the tongue is like a spark. Among the members of our body it proves itself a very world of mischief; it contaminates the whole body; it sets the wheels of life on fire, and is itself set on fire by the flames of the Pit.
Romans 10:14-15
But how, it may be asked, are they to invoke one in whom they have not learned to believe? And how are they to believe in one whose words they have not heard? And how are they to hear his words unless some one proclaims him?
2 Corinthians 2:16
To the latter we are an odor which arises from death and tells of Death; to the former an odor which arises from life and tells of Life. But who is equal to such a task?
2 Corinthians 11:15
It is not surprising, therefore, if his servants also disguise themselves as servants of Righteousness. But their end will be in accordance with their actions.
2 Peter 2:18
With boastful and foolish talk, they appeal to the passions of man's lower nature, and, by their profligacy, entice those who are just escaping from the men who live such misguided lives.