T. Austin-Sparks explores the life of Simon Peter, emphasizing his relatable human flaws and his significant role among the disciples. He highlights Peter's impulsiveness and superficiality, which often led to both great enthusiasm and deep despair. The sermon illustrates how the Resurrection of Jesus transformed Peter, providing him with the depth and strength necessary to fulfill his calling. Through this transformation, Peter became a powerful leader, embodying the resilience and potential that comes from a true union with Christ. Ultimately, the message conveys that the Resurrection offers new life and capabilities to all believers, enabling them to overcome their weaknesses.