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
who does not slander with his tongue and does no evil to his neighbor, nor takes up a reproach against his friend;
A fool's lips walk into a fight, and his mouth invites a beating. A fool's mouth is his ruin, and his lips are a snare to his soul.
But now I am writing to you not to associate with anyone who bears the name of brother if he is guilty of sexual immorality or greed, or is an idolater, reviler, drunkard, or swindler--not even to eat with such a one.
nor thieves, nor the greedy, nor drunkards, nor revilers, nor swindlers will inherit the kingdom of God.
to speak evil of no one, to avoid quarreling, to be gentle, and to show perfect courtesy toward all people.
Do not speak evil against one another, brothers. The one who speaks against a brother or judges his brother, speaks evil against the law and judges the law. But if you judge the law, you are not a doer of the law but a judge.