'Demon possessed' in the Bible

Now [when it] was evening, when the sun had set, they began bringing to him all those {who were sick} and those who were demon-possessed.

And they came to Jesus and saw the demon-possessed man sitting [there] clothed and in his right mind--the one who had had the legion--and they were afraid.

And those who had seen [it] described to them what had happened to the demon-possessed man, and about the pigs.

And [as] he was getting into the boat, the man who had been demon-possessed began to implore him that he could go with him.