Luke 8:31-33

They continually begged Him not to command them to go into the abyss. [Rev 9:1] Now a large herd of pigs was feeding there on the mountain. The demons begged Jesus to allow them to enter the pigs, and He gave them permission. Then the demons came out of the man and entered the pigs; and the herd rushed down the steep bank into the lake and was drowned.