John Nelson Darby expounds on Luke 3, emphasizing the transition from the Jewish law to the new relationships established through Jesus Christ. He highlights John the Baptist's role as a prophet calling for repentance and preparing the way for the Lord, contrasting the moral state of Israel with God's enduring word. Darby notes that while Israel faced judgment for their unbelief, God's purpose extends beyond them to all humanity, as seen in the baptism of Jesus, which signifies a new beginning. He underscores the importance of true repentance and righteousness, warning that mere heritage will not suffice in the face of God's coming judgment. Ultimately, Darby presents Jesus as the perfect man, fully dependent on God, and the fulfillment of God's promises to humanity.