exposure

If someone says you are Crazy because you "hear voices" they are wrong.

Lots of people that are exposed to the Supernatural hear voices.

Psychology does not want you to believe in the Supernatural; they don't want competition.

Jesus your Christ heard voices of Satan and of God.

The Prophets all heard Voices of God, including Muhammad who heard Gabriel tell him to recite the Quran.

Those who do  not hear voices or are not exposed to the Supernatural are skeptical of those who are and want to "prove" they are correct.  Since they lack this exposure, their "proof" is pure folly.

Voices of invisible beings (Spirits, Angels, etc.) are real.  Because of their low density they are invisible in white light.  Air is invisible in white light; it is also real, as is Gravity.

M7 2012.