Explicit teachings on divine things are often more difficult to understand, less easy to affirm internally, and generally much more verbose. This is why Christ taught only inbparables when addressing the masses - He left us a Church to provide exegesis. What authority or competence do you have to question this approach? It doesn't seem to have prevented the faith from spreading. Your description isn't even entirely coherent. "Part of the universe" after we die? Arent we part of it now, since the universe is multiplicity. You even affirm that all (or life, at least) is One, so how does it make sense that our ultimate destination after death would be situated in the universe of multiplicity, rather than the One?