And they came to the other side of the sea, into the country of the Gerasenes. And when he had got out of the boat, straight away there came to him from the place of the dead a man with an unclean spirit. He was living in the place of the dead: and no man was able to keep him down, no, not with a chain; Because he had frequently been prisoned in chains and iron bands, and the chains had been parted and the bands broken by him: and no man was strong enough to make him quiet. And all the time, by day and by night, in the place of the dead, and in the mountains, he was crying out and cutting himself with stones. And when he saw Jesus from far off, he went quickly to him and gave him worship; And crying out with a loud voice he said, What have I to do with you, Jesus, Son of the Most High God? In God's name, do not be cruel to me. For Jesus had said to him, Come out of the man, you unclean spirit. And Jesus said, What is your name? And he made answer, My name is Legion, because there are a great number of us. And he made strong prayers to him not to send them away out of the country. Now on the mountain side there was a great herd of pigs getting their food. And they said to him, Send us into the pigs, so that we may go into them. And he let them do it. And the unclean spirits came out and went into the pigs; and the herd went rushing down a sharp slope into the sea, about two thousand of them; and they came to their death in the sea. Mr 5;1
But the unclean spirit, when he is gone out of a man, goes through dry places looking for rest, and getting it not. Then he says, I will go back into my house from which I came out; and when he comes, he sees that there is no one in it, but that it has been made fair and clean. Then he goes and takes with him seven other spirits worse than himself, and they go in and make it their living-place: and the last condition of that man is worse than the first. Mt 12; 43
If your heart is filled by the Holy Spirit, there will be no place for evil spirits there;
Jesus said to him in answer, If anyone has love for me, he will keep my words: and he will be dear to my Father; and we will come to him and make our living-place with him. Joh 14:23