Matthew 12:34-37

You brood of snakes! How could evil men like you speak what is good and right? For whatever is in your heart determines what you say. A good person produces good things from the treasury of a good heart, and an evil person produces evil things from the treasury of an evil heart. And I tell you this, you must give an account on judgment day for every idle word you speak. The words you say will either acquit you or condemn you.”