I don't get it.If people in the gnosticism and eckankar religions really can leave their bodies and go to heaven.And help you meet dead relatives and angels.What don't they get more unbelievers out of their bodies and prove it?
Their consciousness leaves the body. For some it takes years of spiritual practice using various techniques.
For others, it comes "naturally" because they arouse the Kundalini in some way, when it is active in them.
They "travel" consciously into the various "realms" (heavens) of the Demiurge. ( the God that created this physical realm ( universe ) ).
Here they encounter the various entities that inhabit these realms. ( and they ain't who they think they are )
Depending on their spiritual "knowledge" they can go through several realms (heavens),
But again, this is NOT the "heaven" ( Pleroma ) of the Father (True God).
Everybody is looking for a "short cut "......and there is none.