How do we know that the Lamb is the light of the City of Light?

In Revelation 21:23, we see that the Lamb is explicitly referred to as the light of the City of Light. This is significant because it underscores the integral role that Jesus Christ plays in salvation and in revealing God's character. The glory of God illuminates the New Jerusalem, signifying that His presence is the ultimate reality for believers. The Lamb's light embodies grace and truth, demonstrating how He was the sacrificial offering whose righteousness brings believers into a relationship with God. His glory is not just a future manifestation; it is a present reality for those who are in Christ.