How To Preach Foolishness to the Learned.

A preacher is to preach the Gospel. The Gospel is the good news that Jesus died, was buried, rose again, and is coming again to receive His folk. Of course, explaining why the Gospel is good news is integral to preaching the Gospel. Keep in mind the teachings I use to explain the good news are not the Gospel itself. The Gospel is unchanging. The way I make it make sense in a given culture is flexible.
In preaching, I am trying to persuade people that the Gospel is good news for them and everyone. I realize that if one is not convinced of the historicity of Jesus' death and resurrection, that they cannot believe the good news. I do not believe that a skeptical person however must be convinced of the historicity of the Gospel, prior to believing the Gospel. I believe that they may believe the Gospel on grounds that do not line up exactly with the skeptical worldview, and change their skepticism from the inside out. But I do not believe that it must happen that way either.
For these reasons I think that proofs for the existence of God are often overemphasized by preachers of the Gospel.For instance, while a person must accept the existence of God when He accepts he or she accepts the Gospel, it may be that he or she believes in God because he or she believes in the Gospel. A person may see that the cross and resurrection explain the human life and purpose better than any other gospel and accept it even as an atheist (As they simultaneously cease to be an atheist).A person only has to call on the name of the Lord to be saved, so a good route for most common folk to take in their preaching of the gospel, lacking perhaps in formal academic education at a culturally legitimate university (not a Bible College), instead of trying to explain the teleological/ontological/cosmological proofs of the existence of God, (a passe' proof laughed at in the universities since the the 19th century), is to be a walking testimony of how the Gospel has changed their life for the better. Perhaps, most small churches, full of common folk, should concentrate more on understanding the kingdom that they're representing, and then working to live it out, than understanding passe' philosophical proofs, because there is a Holy Spirit who is able to open people's eyes to the truth of the Gospel without human wisdom. Perhaps, the Holy Spirit can use beautiful and meaningful redemption story of the church as a witness to the blind. This happens when we understand, talk, and walk the story.