When on the created level of existence man thinks God’s thoughts after him, that is, when man thinks in self-conscious submission to the voluntary revelation of the self-sufficient God, he has therewith the only possible ground of certainty for his knowledge. When man thinks thus he thinks as a covenant creature should wish to think. That is to say, man normally thinks in analogical fashion. He realizes that God’s thoughts are self-contained. He knows that his own interpretation of nature must therefore