And I think gnosis should come from individual revelation. However the history of the establish church has very much been against this. Of course there have always been individuals who went against the grain, either through mystical revelation or intellectual revelation, their relationship with the stake and fire have been variable.
the first real attack on this we have is probably Irenaus in the late 2nd century with his work Against Heresies"On the Detection and Overthrow of the So-Called Gnosis" this would indicate an orthodox view to have heresies. The first council of nicea was convened by Constantine to address a heresy and there was a codification of what Christianity is. It’s clear that these early efforts on creating a single view were more than linked to political control and it’s this connection between religion and control which has been a defining feature of Christianity ever since with its relentless persecution of heresies. Individual thought has been controlled and quashed at various points and with various degrees of enthusiasm.
The fact innocent III banned the “occult” reading of the bible (ie reading of the bible in private small groups) in his early reign should leave us with little surprise he called the Albegensian crusades. Self interpretation and different Christian cosmologies were dangerous beliefs. Look at Bruno, burned at the stake for his beliefs we now know to be true.
it then really wasn’t until Luther we saw the successful widespread change in views about limited individual interpretation, esp with the printinting of the bible in local languages - how are you supposed to have individual revelation without access to the source zThis then led to more widespread alternative views most notably the springing up of the various Christian denominations and I would argue the embracing of the Rosicrucian manifestos by the European intellectuals showed a thirst for gnosis.
I would argue Jesus was very much about individual revelation, this is why he spoke in allegory a lot of the time, to get people to think. He wasn’t about rules, in fact he only really had one, be excellent to each other. I suspect he’d have more sympathy with the Life of Brian than the history of mainstream Christian views.
Im with Blake the New Jerusalem (despite what many rugby spectators or jingoists may think) is about finding the new kingdom within, within our imagination.