Because the fall of man was occasioned by seeking knowledge, God uses the foolishness of the cross to “destroy the wisdom of the wise.”
Intellect was the chief cause of the fall; hence, in order to be saved one must believe in the folly of the Word of the cross rather than depend upon his intellect. The tree of knowledge causes man to fall, so God employs the tree of folly (I Peter 2.24) to save souls. “If any one among you thinks that he is wise in this age, let him become a fool that he may become wise.
For the wisdom of this world is folly with God” (I Cor. 3.18-20; also see 1.18-25).