Incognoscible

6. The state of the law rendered more and more incognoscible. By wrapping up the real dispositions of the law in a covering of nonsense, the knowledge of it is rendered impossible to the bulk of the people.

Source: wiktionary

Regarded in this light, the idea of Polarity . . . has nothing to do with the fancy of Terrestrial Magnets, with Hypotheses concerning impalpable and incognoscible Fluids, with Atoms having Poles, or with doctrines concerning Ethereal vibrations.

Source: wiktionary

I freely admit the existence of a poisoned condition of the system from without by an invisible and hitherto incognoscible something.

Source: wiktionary

The still small voice of conscience and the sense of beauty are direct messages from the incognoscible Beyond.

Source: wiktionary