Matthew 12:22:
Then was brought to him one possessed with a devil, blind, and dumb: and he healed him, insomuch that the blind and dumb both spake and saw.
Notes on Matthew 12:22:
Blindness is often a physical issue, not a demonic one. Some people are born without certain body parts that are required to see. Others have had these parts damaged by accidents or diseases. However, this verse shows that in some cases, at least, blindness (as well as inability to speak) can be brought on by a demon, and it will be completely cured when the demon is cast out.
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