The word of God is alone sufficient

"The Bible, infallibly, and the Westminster Confession, in compliance with the Bible, both teach the sufficiency of Scripture, neither science, nor history, nor philosophy is needed to give knowledge. There is no 'two-source' theory of knowledge taught in the Word of God. As Paul clearly stated in the first two chapters of 1 Corinthians, the wisdom of the world is foolishness, and man is not able to come to the knowledge of the truth apart from the Spirit-revealed propositions of Scripture. The Bible is sufficient for all the truth we need and all the knowledge we can have. Here alone do we find, writes Solomon, 'the certainty of the words of truth' (Proverbs 22:17-21). This is Scripturalism." - W. Gary Crampton, The Scripturalism of Gordon H. Clark, Pg. 16