Restoring the Throne

Cotton Mather, who ministered in New England three hundred years ago, said, "The great design and intention of the office of a Christian preacher [is] to restore the throne and dominion of God in the souls of men." (Piper, John. "The Supremacy of God in Preaching." Grand Rapids, MI: Baker Books. 2004. p25)

That is to say, the role of a preacher is to proclaim the Kingdom of God, for the glory of the King and the good of His subjects.