We're told that the anointed cherub was in Eden the garden of God. He was upon the holy mountain of God and walked up and down in the midst of the stones of fire until iniquity was found in him.
Till Iniquity was Found
The Dispensation of Conscience
The history of creation is the working out of the process of purification. Eventually there will be absolute purity in heaven, and there will be only corruption left on Earth. At this time the Earth will be disposed of.
May 14th
The bottomless pit is a synonym for the molten core of the Earth. It's a ball of molten radioactive slag. It's not a domain that Satan can rule. Satan isn't going to enjoy hell. That's propaganda.