John Nelson Darby emphasizes the significance of the genealogy of Jesus in Matthew 1, illustrating how it fulfills God's promises to Israel and highlights the divine grace amidst human sin. He notes the careful structure of the genealogy, divided into three periods, and the importance of Joseph's lineage as the legal heir to David. The sermon also discusses the miraculous conception of Jesus by the Holy Spirit and the angel's message to Joseph, affirming Jesus as Jehovah the Saviour and Emmanuel. Darby underscores the mystery of Christ's dual nature as both fully human and fully divine, and the profound implications of His birth for both Israel and humanity. Ultimately, he calls attention to the obedience of Joseph, who recognizes and responds to God's revelation.