Christianity, since the beginning has been characterized by many dualisms and dualities, including the doctrine of a separate God and the Manichaean (good/evil) dualism. Since the discovery of the Gospel of Thomas in 1945, however some scholars came to believe that Jesus’ original teaching may have been one accurately characterized as non-dualism.
Throughout history, there have always been mystics who came to see the one reality beyond the doctrines – even in the dark middle ages
There are profound non-dualistic elements hidden within in this very ancient mystical tradition:
‘Ein Sof’ or ‘infinite nothingness’ is considered the background of all that is. God is considered beyond all proposition or preconception.
The physical world is seen as emanating from the nothingness – as the many faces ‘partsufim’ of god, that are all a part of the sacred nothingness.