When the Lord God Almighty speaks of eternity, most of us assume that it will be somewhat like our current life, except that we will have everything we have always wanted. We assume that finally, we will be able to purchase that luxury car, or the yacht we have always dreamed about. We think of eternity as an enhanced version of our current life.
But that is not what the Lord God Almighty means when he speaks of eternity. Eternity is a reference to the fact that time no longer will exist. We no longer will be running against the clock. Eternity will be one elongated minute, that never comes to an end. The weeks will never need to start and end, nor will the months and years. We will live in a vacumn that knows no time and space, that knows no ending.
When eternity begins we all will know, because everyone whose ether is a golden hue will need the Lord to tell them that eternity has just begun. We will need the Lord to tell us that the millennial reign has ended, and eternity has just begun. Eternity will let us know that its reign will never end.