Agnosy

Triad above all substance, super-divine and above the good, guide of the Christians into the Divine Wisdom, conducting us to that above agnosy, i.e., the unknowable, to the highest clearness and the super-eminent height

Source: wiktionary

Just as agnosy is the great evil to the Hermetist, so is Parzival's zwivel at the root of all his tribulations.

Source: wiktionary

Before man receives the grace of revelation, he lives in agnosy: he does not know God, the gnostic God who is his father and the source of revelation; he does not know himself as the son of God.

Source: wiktionary

And then (the man,) delivered as much from that which is seen as from that which sees, penetrates into the true mystic obscurity and darkness of the agnosy;

Source: wiktionary