How does the curse get lifted from the earth?
The curse is lifted as the tribulation's judgments and cataclysmic events pay off Satan's mortgage and defeat him. Then Christ returns, destroys remaining rebellious armies, and God renovates the planet, restoring it to an Eden-like condition in preparation for His thousand-year Kingdom.
Les explains that the whole reason for the judgments and cataclysmic events is to pay off Satan's mortgage, pictured in Revelation chapter 5 when the scroll, really a mortgage, had its seals peeled off. Paying off that mortgage is the scope of the tribulation. As a result, the planet is lifted from under the curse, or the curse is lifted from the planet. By defeating Satan and lifting the curse, the planet becomes a renovation project God will accomplish in short order, making it ready for the Kingdom. When Christ returns, He sets up His Kingdom on earth, and it will be glorious. The earth will be brought back as it was in the Garden of Eden, not just in one small area, but the whole planet will revert to a Garden of Eden situation. After the seven years are consummated, Christ returns, destroys the remaining armies and all still in rebellion, and the earth is brought back to Eden's condition; then comes the thousand years. Les reminds his classes that the Kingdom was spoken of and prophesied all through the Old Testament, the coming of the King and the Kingdom when Israel shall reign gloriously, but it is not until Revelation that a time frame of a thousand years is attached. The Old Testament speaks of forever; this Kingdom is eternal.