"The Line of the Promise" refers to God's redemptive plan traced through specific individuals in Scripture, beginning with Adam and culminating in Jesus Christ. This lineage includes key figures like Abraham, Isaac, Jacob, and David, through whom God promised to bring salvation to all nations. It highlights God's faithfulness in preserving His covenant, ensuring the fulfillment of His promise to send a Savior to redeem humanity. This theme underscores the continuity of God's plan and His sovereign choice in selecting those through whom the promise would be realized.