Billy Sunday emphasizes the significance of the name 'Wonderful' ascribed to Jesus in Isaiah 9:6, exploring how this name encapsulates His extraordinary birth, character, life, teachings, and the impact of His resurrection. He illustrates that Jesus' humble beginnings, miraculous deeds, and profound teachings set Him apart as truly wonderful, highlighting that His life was marked by selflessness and a commitment to serving others. Sunday argues that the transformative power of Jesus continues to be evident today, as He saves and changes lives, affirming that He is a wonderful Savior who can save anyone, regardless of their past. The preacher calls for individuals to recognize and accept this wonderful Savior into their hearts.