ah... so is the earth to be purified of the system through fire? kind of makes sense. Growing up in the farm we would clear brush and other things, pile them up and burn them. This cleaned up the soil sterilizing it for new plants.
For the LORD thy God is a consuming fire..... Deut. 4:24; Deut. 9:3; and Hebrews 12:29...
Paul says at the last trump, there are 7 trumps, all flesh will be changed... and this age that is now ends at the return of Christ.
And this flesh age has produced plenty of trash/garbage that need be cleansed ... law and order will be restored, of course according to God's law and order.
In Ezekiel 16 whole chapter, Jerusalem is described as the Heavenly Father's most favorite place, and He intends to reclaim her and clean her up once again.