“Arise! Shine! For your light arrives! The splendor of the Lord shines on you!”
The book ends, 56.1—66.24, showing the restoration of Israel and the glory of Jerusalem. God calls the city to show its full glory as nations stream into it.
Jesus may allude to this verse in Mat 5.16. Our call, also, is to reflect God’s glory outward, as we are transformed by it.