G. Campbell Morgan emphasizes the vital role of recognizing God in the national life of Israel as illustrated in 1 Chronicles. He discusses the genealogies as a demonstration of God's divine selection and purpose, leading to the ultimate goal of establishing a relationship with Him. Morgan highlights David's life, showcasing his passion for the temple and submission to God's will, which reflects the importance of national accountability to God. The sermon underscores that a nation's moral standards and character are deeply influenced by its recognition of God, making it essential for societal stability. Ultimately, the message calls for nations today to acknowledge God's sovereignty and guidance in their lives.