Schizophrenia Support Group
Schizophrenia is a psychiatric diagnosis that describes a mental disorder characterized by impairments in the perception of reality and by significant social dysfunction. Untreated schizophrenia is typically characterized by demonstrating disorganized thinking and experiencing delusions or auditory hallucinations.

I have Schizoaffective Disorder & hear voices too. It's not the Devil, it's juts subvocal speech. Part of my brain talking to another part of my brain. It's still you talking to yourself is what I'm trying to say.
Saphris is a much more recent antipsychotic, that or Latuda is what I would recommend. Thorazine and Haldol are the two oldest antipsychotics and are considered not that good with a lot of side effects.
Schizophrenia and Schiaozffective Disorder are mental illnesses based on chemical imbalances and changes in the brain, not anything having to do with religion.
I'm so sorry your family doesn't understand that. Have you tried getting therapy or seeing a psychiatrist? I do both and it helps a lot. Sometimes even just to check and see if some of my fears are legitimate with a reality check or not.