This sermon examines Acts chapter 19 to distinguish between incomplete religious knowledge and complete faith in Jesus Christ. It highlights how the twelve disciples in Ephesus, who only knew John's baptism of repentance, required further instruction to understand the death, burial, and resurrection of Jesus. The text contrasts genuine spiritual power with counterfeit practices, illustrating that invoking Jesus' name without a true relationship yields no authority. Additionally, it addresses the role of special miracles as transitional signs in Acts rather than normative doctrine for today. The message urges believers to move beyond basic understanding, avoid confusion, and remain grounded in the clear teachings of the New Testament epistles.