Reference: Evil-speaking
Easton
is expressly forbidden (Tit 3:2; Jas 4:11), and severe punishments are denounced against it (1Co 5:11; 6:10). It is spoken of also with abhorrence (Ps 15:3; Pr 18:6-7), and is foreign to the whole Christian character and the example of Christ.
See Verses Found in Dictionary
A foolish man's lips are a cause of fighting, and his mouth makes him open to blows. The mouth of a foolish man is his destruction, and his lips are a net for his soul.
But the sense of my letter was that if a brother had the name of being one who went after the desires of the flesh, or had the desire for other people's property, or was in the way of using violent language, or being the worse for drink, or took by force what was not his, you might not keep company with such a one, or take food with him.
Or is a thief, or the worse for drink, or makes use of strong language, or takes by force what is not his, will have any part in the kingdom of God.
To say no evil of any man, not to be fighters, to give way to others, to be gentle in behaviour to all men.
Do not say evil against one another, my brothers. He who says evil against his brother or makes himself his brother's judge, says evil against the law and is judging the law: and in judging the law you become, not a doer of the law but a judge.