It was once said, the best argument for Christianity is Christians and the best argument against Christianity is Christians.  Our role in making faith in Christ real and valid is critical.  If we live our lives with the love of Christ we will make the greatest impact for Christianity.  Conversely, if we claim to be Christians but live our lives without the love and hope of Christ, we destroy the witness and any community possible for the kingdom of Christ.  REAL COMMUNITY is achieved through our authenticity as followers of Christ living just as He would want us to live.