BOTR I have a problem believing these people are 'closer to God'. In their mind maybe they think so and that the voices are from God even when telling them to do horrific things.
Quite often these ones will feel that they are on a special mission from God. My son did not experience that but my brother did.
Both my brother and my son were highly intelligent people, non-violent and quite soft spoken---WHEN NORMAL. The delusional ill person became violent, angry, and there was no convincing them they were wrong in their thinking. My son's psychiatrist told us at one point to not waste our time trying to convince our son otherwise once he had a fixated thought in his head. Even the psychiatrist was unable to get through many times.
My son was tried on several medications before the right combo was found. I remember how horrified my ex and I were when we went to see him the 2nd time he was hospitalized. The medication they tried caused him to shuffle around with a weird smile on his face and to drool uncontrolably. Needless to say they tried another combo of medications that worked very well.
My sincere sympathies to anyone dealing with this illness either personally or with a family member/friend. The treatments have come a long way. The biggest problem is to convince the person too not go off their meds when they feel good. The relapses become worse.