Mark 5:15 (KJV)

And he besought him much that he would not send them away out of the country.

Now there was there nigh unto the mountains a great herd of swine feeding.

And all the devils besought him, saying, Send us into the swine, that we may enter into them.

And forthwith Jesus gave them leave. And the unclean spirits went out, and entered into the swine: and the herd ran violently down a steep place into the sea, (they were about two thousand;) and were choked in the sea.

And they that fed the swine fled, and told it in the city, and in the country. And they went out to see what it was that was done.

And they that saw it told them how it befell to him that was possessed with the devil, and also concerning the swine.

And they began to pray him to depart out of their coasts.

And when he was come into the ship, he that had been possessed with the devil prayed him that he might be with him.

Howbeit Jesus suffered him not, but saith unto him, Go home to thy friends, and tell them how great things the Lord hath done for thee, and hath had compassion on thee.

And he departed, and began to publish in Decapolis how great things Jesus had done for him: and all men did marvel.