The central message of this sermon is that the true Jesus, as described in the Bible, is often compromised or reinterpreted by individuals to fit their own personal experiences and ideologies, resulting in a multitude of "imposters" and "wannabes." The preacher emphasizes that there is only one true Jesus, but each person's understanding and relationship with Him can vary greatly. This idea advances the belief that Christianity is not just about knowing facts about Jesus, but about having a personal experience of His presence and character in one's life. The takeaway from this sermon is that it's essential to distinguish between the biblical Jesus and individual interpretations or caricatures of Him, and to understand that our relationship with God is about becoming like Jesus through transformation and conformation to His image.