human
You appear to resolve all our knowledge of God into an act of faith in a revelation handed down from the past. But the very conception of revelation implies the previous conception of God, who makes the revelation. Faith in a revealed doctrine is based on the veracity of God, who reveals it. But in order that one may be able to make this act of faith, he must previously know that God is, and that he is veracious. Thus, we must believe that God is veracious because it is revealed, and believe this revealed doctrine that he is veracious because of his veracity. This is a vicious circle, and gives no basis whatever for rational belief.