Man possesses knowledge through nature (general revelation), or special revelation. This is the very foundation of hermeneutics. As the recipient of knowledge, man is indeed at bottom, an interpreter. Ethically speaking, Christians must interpret reality according to God's knowledge of reality. And that knowledge is knowledge that is prior to the fact while man's knowledge is revealed after the fact. Moreover, humans only know something when their interpretation of the information is accurate. A faulty interpretation of information does not rise to the level of understanding, which is necessary for knowledge to exist.
“Our prolegomena begins from below, with man. The steps in our development of prolegomena will be to look at man, his nature and his receptivity to revelation; at God, as He is understood by man; and at the appropriation of some particular concepts disclosed by revelation.”
To dismiss the significance of man’s ability to know and hear from God carries with it implications that ripple through every major area of theology and philosophy. Moreover, failure to distinguish between the two types of revelation results in a hermeneutic that, in my opinion, produces a worldview that comingles the sacred with the secular. The results can range from simple error to rank heresy. One has to look no further than Pelagius to see the unholy fruit of confusing the two types of revelation. In addition, theonomy or dominion theology represent very well what happens when theologians are not careful in their hermeneutic when they fail to distinguish between the two types of revelation adequately. "The content of faith can be defined because the message of the Bible is truly made known by the Holy Spirit. Yet this content cannot be defined exhaustively or definitively because mystery remains even in the act of revelation." [Bloesch: Holy Scripture]
Through the centuries well–intentioned men and women have erred either by reducing revelation to rational information or by misunderstanding revelation as an ecstatic experience devoid of cognitive content. Modern fundamentalism illustrates the first error and existentialism the second. [Bloesch: Holy Scipture] It would seem that many evangelicals with strong political leanings tend toward rationalistic reduction of biblical revelation. This seems to emerge in the conversation I had with Mr. Hays.