The foundations of the city wall were decorated with all kinds of gems: The first foundation was jasper, the second sapphire, the third agate, the fourth emerald,

All those who had become settled down and at home, living on the earth, will worship it, everyone whose name had not been written in the Book of Life belonging to the lamb that had been slaughtered since the foundation of the world.

The beast that you saw existed once, but is no longer, and is going to crawl out of the bottomless pit and then proceed to its destruction. Those living on earth, whose names were not written in the Book of Life from the foundation of the world, will be surprised when they see the beast because it was, is no longer, and will come again.