Matthew 12:39

12:39 But he answered them, “An evil and adulterous generation asks for a sign, but no sign will be given to it except the sign of the prophet Jonah.

Matthew 12:45

12:45 Then it goes and brings with it seven other spirits more evil than itself, and they go in and live there, so the last state of that person is worse than the first. It will be that way for this evil generation as well!”