1 Corinthians 3:18 Let no man deceive himself. If any man among you seemeth to be wise in this world, let him become a fool, that he may be wise.
19 For the wisdom of this world is foolishness with God. For it is written, He taketh the wise in their own craftiness.
20 And again, The Lord knoweth the thoughts of the wise, that they are vain.
Paul is telling us here that if we are won over by those that are preaching foolishness the wisest thing we can do is to become foolish man man so we can come to God. He goes own to say that human wisdom which cannot save, also cannot either build a church or prevent its growth. We have to humble ourselves to receive God while the wise are so smart they do not think they need a savior.The wisdom of man is foolishness to God. The wisest man in the world is the one who seeks God and humbly receives Him as his Savior.