S. Matthew 12:43-45

But the unclean spirit, when he is gone out of the man, passeth through waterless places, seeking rest, and findeth it not. Then he saith, I will return into my house whence I came out; and when he is come, he findeth it empty, swept, and garnished. Then goeth he, and taketh with himself seven other spirits more evil than himself, and they enter in and dwell there: and the last state of that man becometh worse than the first. Even so shall it be also unto this evil generation.