TSK · Matthew 15:18

The words of his mouth are iniquity and deceit. He has ceased to be wise and to do good.

The lips of the righteous know what is acceptable, but the mouth of the wicked is perverse.

The heart of the righteous weighs answers, but the mouth of the wicked gushes out evil.

That which enters into the mouth doesn't defile the man; but that which proceeds out of the mouth, this defiles the man."

And the tongue is a fire. The world of iniquity among our members is the tongue, which defiles the whole body, and sets on fire the course of nature, and is set on fire by Gehenna.