With the revelation of the Holy City, the New Jerusalem, we now have the final words of the Book of Revelation concerning Jesus the Messiah. John completes the picture of the eternal age in as much as God has decided to show it to him (us) and ends with both an affirmation and invitation. An affirmation as to the assuredness of the prophecy written in the book and an invitation to all to join God in that blessed, eternal kingdom.