6 Bible Verses about Demons Causing Illness

And one out of the crowd answered him, and said, "Teacher, I brought to you my son, who has a mute spirit; and wherever it seizes him, it throws him down, and he foams at the mouth, and grinds his teeth, and wastes away. I asked your disciples to cast it out, and they weren't able." He answered him, "Unbelieving generation, how long shall I be with you? How long shall I bear with you? Bring him to me."read more.
They brought him to him, and when he saw him, immediately the spirit convulsed him, and he fell on the ground, wallowing and foaming at the mouth. He asked his father, "How long has it been since this has come to him?" He said, "From childhood. Often it has cast him both into the fire and into the water, to destroy him. But if you can do anything, have compassion on us, and help us." Jesus said to him, "'If you can?' All things are possible to him who believes." Immediately the father of the child exclaimed, "I believe. Help my unbelief." When Jesus saw that a crowd came running together, he rebuked the unclean spirit, saying to him, "You deaf and mute spirit, I command you, come out of him, and never enter him again." Having screamed, and convulsed greatly, it came out of him. The boy became like one dead; so much that most of them said, "He is dead." But Jesus took him by the hand, and raised him up; and he arose.

When they came to the crowd, a man came to him, kneeling down to him, saying, "Lord, have mercy on my son, for he is epileptic, and suffers severely; for he often falls into the fire, and often into the water. So I brought him to your disciples, and they could not cure him."read more.
Jesus answered, "Faithless and perverse generation. How long will I be with you? How long will I bear with you? Bring him here to me." Jesus rebuked him, the demon went out of him, and the boy was cured from that hour.

It happened on the next day, when they had come down from the mountain, that a great crowd met him. And suddenly a man from the crowd called out, saying, "Teacher, I beg you to look at my son, for he is my only child. And suddenly a spirit seizes him, and all at once he cries out, and it convulses him so that he foams, and it hardly departs from him, bruising him severely.read more.
I begged your disciples to cast it out, and they could not." Jesus answered, "Faithless and perverse generation, how long shall I be with you and bear with you? Bring your son here." While he was still coming, the demon threw him down and convulsed him violently. But Jesus rebuked the unclean spirit, and healed the boy, and gave him back to his father.

And as they went out, suddenly a mute man who was demon possessed was brought to him. And when the demon was cast out, the mute man spoke. And the crowds marveled, saying, "Nothing like this has ever been seen in Israel."

He was casting out a demon, and it was mute. It happened, when the demon had gone out, the mute man spoke; and the crowds marveled.

And just then there was a woman who had a spirit of infirmity eighteen years, and she was bent over, and could in no way straighten herself up.