Peter Brandon emphasizes the transformative power of the cross and resurrection, illustrating how Jesus turned the disciples' fear into peace and joy. He recounts the moments after Jesus' resurrection when He appeared to the disciples, offering them peace and commissioning them to spread the Gospel. Brandon highlights the significance of Jesus breathing the Holy Spirit into them, empowering them for their mission. He contrasts the divine power of the resurrection with the human weakness of fear, urging believers to embrace the freedom that comes from Christ. Ultimately, he calls for a revival of joy and the fullness of the Spirit among Christians today.