G. Campbell Morgan emphasizes the centrality of the Kingdom of God in Jesus' teachings and actions, illustrating that the Kingdom was fundamental to His ministry. He highlights that Jesus preached repentance and the nearness of the Kingdom, urging His followers to seek it first. Morgan explores the significance of the Kingdom as both a rule and a realm, asserting that it encompasses God's authority and the results of His reign. He also addresses the misconceptions surrounding the Kingdom and the Church, affirming that both concepts are unified in Christ's mission. Ultimately, the sermon calls believers to recognize the Kingdom's importance and their role in realizing it on earth.