Ephesians 4:29
Let no bad word pass your lips, but only such speech as is good for edification, as occasion may require, words that are gracious and a means of grace to those who hear them.
Matthew 12:35-37
The good man brings good out of his good store, and the evil man brings evil out of his store of evil.
Colossians 4:6
let your talk always have a saving salt of grace about it, and learn how to answer any question put to you.
Titus 1:10-11
For there are plenty of insubordinate creatures who impose on people with their empty arguments, particularly those who have come over from Judaism;
James 3:6-9
And the tongue is a fire, the tongue proves a very world of mischief among our members, staining the whole of the body and setting fire to the round circle of existence with a flame fed by hell.
Romans 10:14-15
But how are they to invoke One in whom they do not believe? And how are they to believe in One of whom they have never heard? And how are they ever to hear, without a preacher?
2 Corinthians 2:16
to the one a deadly fragrance that makes for death, to the other a vital fragrance that makes for life. And who is qualified for this career?
2 Corinthians 11:15
So it is no surprise if his ministers also masquerade as ministers of righteousness. Their doom will answer to their deeds.
2 Peter 2:18
By talking arrogant futilities they beguile with the sensual lure of fleshly passion those who are just escaping from the company of misconduct ??19 promising them freedom, when they are themselves enslaved to corruption (for a man is the slave of whatever overpowers him).