I cant believe how this could be taken as a spiritual event. Your son is 5 so thinks at the level of what 2, maybe 3 years of age. Anything that comes out of his mouth is spontanious and inside his head. I have a old acquaintance who is autistic. Not nearly on the level of your son. They say things, repeat things they hear, just so they can see what it sounds like. To attach religious meaning to a 5 year old autistic child thoughts is not only insane, but quite sad. Your son is disabled, not a vessel for christ to speak through. I hope your religious believes but severly damper this childs development.