John Frame, in Machen's Warrior Children, says,
" From around 1944 to 1948, the OPC was troubled by a controversy between followers of Cornelius Van Til, Westminster’s Professor of Apologetics, and those of Gordon H. Clark, Professor of Philosophy at Wheaton College, later at Butler University and Covenant College. The Presbytery of Philadelphia of the OPC ordained Clark to the ministry in 1944, but followers of Van Til complained against his ordination. Several issues entered this controversy, the main one described as the issue of the “incomprehensibility of God.” Both sides agreed, of course, that God was incomprehensible to human beings. But they disagreed on the relation of God’s thoughts to man’s thoughts. [10] To Van Til, when God thinks “this is a rose,” the “contents” of his thought are “qualitatively different” from the contents of any human mind thinking “this is a rose.” To Clark, the contents of God’s thought and a human being’s in this case are identical: both God and man are having the same thought. Van Til was trying to guard the creator-creature distinction by saying that just as God radically differs from man, so the contents of God’s mind radically differ from the contents of man’s mind. Clark was trying to avoid skepticism: for if God’s thought is true, and human thought necessarily differs from it in every respect, then human thought cannot be true."
