Many people think that the gospel message is too simple and stupid. But this does not bother me, since human beings have too high of an opinion of their own intellect. We cannot properly discern wisdom and foolishness unless the Spirit of God is inside us.
The person without the Spirit does not accept the things that come from the Spirit of God but considers them foolishness, and cannot understand them because they are discerned only through the Spirit. (I Corinthians 2:14 NIV).