After the Millennium Kingdom and White Throne judgement, God will destroy the heaven and earth with fire. And He’ll create a new Heaven and earth.
“But the day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up.”
2 Peter 3:10 (KJV, HOLY BIBLE)
“And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea. And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband.”
REVELATION 21:1-2 (KJV, HOLY BIBLE)
All humans who did not accept Christ as their Lord and Savior will be cast into hell, alongside the angels who rebelled against God and all demonic forces. There will be no escape. Thus there will be a complete and utter end to sin.
God will live with the believers, His children through Christ, on this new earth. And a new era free from any sin or curse will begin.