I do not attribute all mental illnesses to spiritual causes. In fact, most mental illnesses are due to physiological causes in the brain. However, I can't help but wonder if schizophrenia could be a medical diagnosis of a spiritual condition. One of the primary symptoms is the hearing of intelligible voices. These voices are negative, violent, & self destructive. Often, multiple distinct voices are heard. As I think through the possible demonic connection, I'd like to hear your opinions on this.