2 adjectives to describe revealers

Rush comes to the explanation of the powers of the letters as the confident first revealer of nature's management and wisdom; and hopes to have laid the foundation of a system of instruction in reading and oratory, which, if adopted and perfected, "will beget a similarity of opinion and practice," and "be found to possess an excellence which must grow into sure and irreversible favour.

For what is Genius but the prophetic revealer of the unseen True, that can neither be purchased nor bribed into light?

2 adjectives to describe  revealers