I believe God will intervene to save what He called "Good", the earth/world.

Many bibles call "age" "world" and that's how people get trapped into thinking the world will someday end. The only world "age" that came to an end was predicted in the bible It was the old covenant world. There are only two worlds the old covenant world and the new covenant world. Sound confusing? The new covenant world has no end.

His spiritual kingdom on earth is forever. Let's review Isaiah 9:7 in a few versions. Isaiah 9:7, NIV: "Of the greatness of his government and peace there will be no end. He will reign on David's throne and over his kingdom, establishing and upholding it with justice and righteousness from that time on and forever. The zeal of the LORD Almighty will accomplish this." Isaiah 9:7, ESV: "Of the increase of his government and of peace there will be no end, on the throne of David and over his kingdom, to establish it and to uphold it with justice and with righteousness from this time forth and forevermore. The zeal of the LORD of hosts will do this." Isaiah 9:7, KJV: "Of the increase of his government and peace there shall be no end, upon the throne of David, and upon his kingdom, to order it, and to establish it with judgment and with justice from henceforth even for ever. The zeal of the LORD of hosts will perform this." Isaiah 9:7, NASB: "There will be no end to the increase of His government or of peace, On the throne of David and over his kingdom, To establish it and to uphold it with justice and righteousness From then on and forevermore. The zeal of the LORD of hosts will accomplish this." Isaiah 9:7, NLT: "His government and its peace will never end. He will rule with fairness and justice from the throne of his ancestor David for all eternity. The passionate commitment of the LORD of Heaven's Armies will make this happen!" Isaiah 9:7, CSB: "The dominion will be vast, and its prosperity will never end. He will reign on the throne of David and over his kingdom, to establish and sustain it with justice and righteousness from now on and forever. The zeal of the LORD of Armies will accomplish this." We're told that He will uphold His kingdom with justice. I see justice as assigning rewards or punishments. This tells me judgment will go on forever. God is in control of everything.