11 Bible Verses about Evil Speaking

Therefore put away all malice, all deceit, insincerity, jealousy, and slander of every sort.

For there are many individuals who are unruly, empty talkers and deceivers, particularly those of the circumcision, whose mouths must be stopped; for they upset whole households and, for filthy lucre's sake, teach what they ought not to teach.

they must speak evil of none, they must not be quarrelsome, but gentle, showing perfect meekness toward all.

If a man thinks himself to be religious, and yet does not bridle his tongue, but deceives his own religion,

So also the tongue is a small member and makes great boasts. Behold, how great a forest is set on fire by a little spark! And the tongue is a fire; it is a very world of iniquity among our members, defiling the whole body, and setting on fire the wheel of nature, and is itself set on fire by hell. For while every kind of beast and bird, and of reptiles and sea-creatures are tamable, and actually have been tamed by mankind,read more.
no man can tame the tongue, restless evil that it is, full of deadly poison. With it we continually bless our Lord and Father, and with it we are accustomed to curse men made in the image of God. From out of the same mouth pour forth blessings and cursings! My brothers, this ought not to be so.

Do not be talking against each other, brothers. He who is talking against a brother and condemning his brothers is talking against the Law and condemning the Law. But if you are condemning the Law, you are not a doer of the Law, but a judge.

Do you not know that the wicked will not inherit the kingdom of God? Do not be deceived. None who are immoral, or idolaters, or adulterers, or catamites, or sodomites, or thieves, or avaricious men, or drunkards, or foul-mouthed men, or extortioners will inherit the kingdom of God.

Their throat is an open grave; With their tongues they have used deceit. The venom of asps is under their lips.

So then put away falseness and speak every man the truth to his neighbor, for we are members one of another.

From your lips let no evil words come forth, but such as occasion warrants, such as are good for upbuilding and give a blessing to the hearers. And grieve not the Holy Spirit of God, in whom you have been sealed for the day of redemption. Banish from among you all bitterness and passion and anger and clamor and slander, as well as all malice;

so too with vulgarity and buffoonery and foolish jesting. Such words become you not, but rather thanksgiving.