G. Campbell Morgan preaches about 'The Golden Age,' a future time when Christ will reign personally over the earth, bringing peace, justice, and restoration. He emphasizes the fulfillment of Old Testament prophecies regarding Israel's restoration and the blessings that will flow from Christ's reign, including the transformation of nature and society. Morgan describes a world where righteousness prevails, children play safely, and the earth is freed from the curse of sin, highlighting the significance of Christ's authority as both King and Judge. He encourages believers to anticipate this glorious future while experiencing the blessings of Christ's reign in their lives today.