@Inkie...
"Why would you choose to question such a one knowing that they “seem like a good, spiritual human”?"
The keyword here is seem. Our judgment of others is easily contaminated by presupposition. I've misjudged people before, as to both 'good' and 'bad'. I once knew a man who 'seemed to be a good, spiritual human' and yet he was a pedophile who confessed (I read court documents) to raping his own 5 year old daughter. He was the farthest thing imaginable from a good person.
"How do you test? You test by “love.” That is the determining factor. Is what is stated originating from love? If not, then it does not originate from God. Easy."
The "love" test was also adequate for Annie Moore, one of the victim's of the Jim Jones cult massacre:
"His love for humans was insurmountable," she wrote, "and it was many whom he put his love and trust in, and they left him and spit in his face." - http://www.msnbc.msn.com/id/27743208/
She was duped into suicide by a person who seemed motivated by love. Emotions are a wonderful thing but shouldn't be used to critically analyze such circumstances.
What steps do you suggest be taken?
From what I understand, hearing voices is not normal and is more likely symptomatic of a mental health issue. Since I'm not a psychologist, the first step I suggest for the hearer of voices is to consult a professional (see HC's comment above) who has experience and training to help. They would be better equipped to diagnose and prescribe after hearing WS's story and surrounding events, details, etc...
But the first step for the person who accepts the hearer's account at face value, I'd recommend a book on critical thinking. Seriously. I'm in the middle of a couple myself.