God called Jonah to preach to Nineveh and God called many to salvation. It was not Jonahs persuasive words but God who brought about salvation. Do you believe that God can do a similar work in Denver, New York, San Francisco, LA, Dallas, Houston, Chicago? I believe that he can but the problem is most christians do not see a need to confront the world and to preach repentance. Most have better things to do and would rather be involved in non confrontational ministry. Listening to a recent Way of the Master minute on confronting false teachers the suggestion was to be bold and to open up the law in doing so. Are you doing this when you confront false teachers? Are you writing letters, meetings with false prophets and calling them to repentance? If not go out and do what Jesus did. I think if people all did these things we may see rivals in cities. So go out and call people to repentance as Jonah did!!