1 Corinthians 1:19-21; 1 Corinthians 2:2

19 For it is written, I will destroy the wisdom of the wise, and will bring to nothing the understanding of the prudent.

20 Where is the wise? where is the scribe? where is the disputer of this world? hath not God made foolish the wisdom of this world?

21 For after that in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe.

2 For I determined not to know any thing among you, save Jesus Christ, and him crucified.