6 Bible Verses about Demons Causing Illness

A man from the crowd answered him, "Teacher, I brought my son to you; he has a dumb spirit, and whenever it seizes him it throws him down, and he foams at the mouth and grinds his teeth. He is wasting away with it; so I told your disciples to cast it out, but they could not." He answered them, "O faithless generation, how long must I still be with you? how long have I to bear with you? Bring him to me."read more.
So they brought the boy to him, and when the spirit saw Jesus it at once convulsed the boy; he fell on the ground and rolled about, foaming at the mouth. Jesus asked his father, "How long has he been like this?" "From childhood," he said; "it has thrown him into fire and water many a time, to destroy him. If you can do anything, do help us, do have pity on us." Jesus said to him, "'If you can'! Anything can be done for one who believes." At once the father of the boy cried out, "I do believe; help my unbelief." Now as Jesus saw that a crowd was rapidly gathering, he checked the unclean spirit. "Deaf and dumb spirit," he said, "leave him, I command you, and never enter him again." And it did come out, after shrieking aloud and convulsing him violently. The child turned like a corpse, so that most people said, "he is dead"; but, taking his hand, Jesus raised him and he got up.

When they reached the crowd, a man came up and knelt to him. "Ah, sir," he said, "have pity on my son; he is an epileptic and he suffers cruelly, he often falls into the fire and often into the water. I brought him to your disciples, but they could not heal him."read more.
Jesus answered, "O faithless and perverse generation, how long must I still be with you? How long have I to bear with you? Bring him here to me." So Jesus checked the daemon and it came out of him, and from that hour the boy was healed.

Next day, when they came down the hill, a large crowd met him. "Teacher," shouted a man from the crowd, "look at my son, I beg of you, for he is my only boy, and a spirit gets hold of him till he suddenly shrieks; it convulses him till he foams; indeed it will hardly leave off tearing him to pieces.read more.
I begged your disciples to cast it out, but they could not." Jesus answered, "O faithless and perverse generation, how long must I still be with you and bear with you? Fetch your son here." Before the boy could reach Jesus, the daemon dashed him down and convulsed him, but Jesus checked the unclean spirit, cured the boy, and handed him back to his father.

As they went out, a dumb man was brought to him, who was possessed by a daemon, and when the daemon had been cast out, the dumb man spoke. Then the crowd marvelled; they said, "Such a thing has never been seen in Israel!"

He was casting out a dumb daemon, and when the daemon had gone out the dumb man spoke. The crowds marvelled,

there was a woman who for eighteen years had suffered weakness from an evil spirit; indeed she was bent double and quite unable to raise herself.