Satan's own kingdom will prove once and for all that God is more powerful. When the time comes Satan will be chained to a lake of fire for 1000 years by God and he will not be able to break those chains. He will be helpless for all to see.
For centuries God's Glory as well as the glory of Jesus Christ have been all over the world. What glory does Satan have? The father of all lies? The evil one? The Devil? No glory at all he keeps losing to God his former father and Jesus Christ.