‘And there will be night no more, and they need no light of lamp nor light of sun, for the Lord God will give them light and they will reign for ever and ever.'
He Who is the light of the world (John 8:12) gives them light, and this light has given them life. They need nothing more. Neither sun nor artificial light will be required. Darkness is gone. All is light. Indeed with God as their light that is all that they can possibly need. Their lives will be lived in the glory of His light.
‘And they will reign for ever and ever'. They share the eternal reign of Christ (Revelation 11:15). This is an advance on their reign with Him while they were on earth (Revelation 5:10; Revelation 20:4; Romans 5:17). Now they stand supreme with Him (compare Daniel 12:3).
The book has reached its ultimate. All has been restored to its pristine glory, and there is better far to come.
CONCLUSION.
We now have a series of statements summing up the main messages of the book. They are very similar to postscripts in letters, a little disjointed but each concerned to highlight something.