Proverbs 12:13

The wicked is snared by the transgression of his lips: but the just shall come out of trouble.

The wicked are caught and trapped by the sinful things they say with their own lips. By contrast the righteous and the just escape trouble and come safely through it. A man's angry threats about his wife can expose his own conduct. That exposure can resolve his misunderstanding with another man, as Mr. Jones's words resolved his misunderstanding with Mr. Capers, and afterward lead him to return to church, showing how one is snared by the transgression of the lips.