Matthew 12:35-36, 41

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 people of Nineveh will stand up against this generation on judgment day and condemn it, for they repented of their sins at the preaching of Jonah. Now someone greater than Jonah is here—but you refuse to repent.