Watchman Nee emphasizes that Jesus declared Himself as the light of the world and, astonishingly, called His disciples, and by extension us, the light of the world as well. He urges believers to shine their light through good works, revealing the world's darkness and glorifying God. Nee contrasts the mission of the Church with that of John the Baptist, asserting that Christians are not meant to withdraw from the world but to engage with it, bringing the light of Christ into every aspect of life. He highlights that true peace, joy, and righteousness come from the Holy Spirit, enabling believers to overcome worldly tribulations. Ultimately, the Church's role is to illuminate the world and proclaim the good news, fulfilling God's purpose amidst darkness.