"The great white throne judgment is described in Revelation 20:11-15 and is the final judgment prior to the lost being cast into the lake of fire. We know from Revelation 20:7-15 that this judgment will take place after the millennium and after Satan is thrown into the lake of fire where the beast and the false prophet are (Revelation 19:19-20; 20:7-10). The books that are opened (Revelation 20:12) contain records of everyone’s deeds, whether they are good or evil, because God knows everything that has ever been said, done, or even thought, and He will reward or punish each one accordingly (Psalm 28:4; 62:12; Romans 2:6; Revelation 2:23; 18:6; 22:12)."
https://www.gotquestions.org/great-white-throne-judgment.html
"This event is often referred to as the Great White Throne Judgment. Revelation pictures Jesus as the judge over all the living and the dead, a role He predicted during His earthly ministry: "The Father judges no one, but has given all judgment to the Son" (John 5:22). It is the final judgment of God upon humankind. After this event, there will never again need to be a trial, and God will never again need to act as judge."
https://www.compellingtruth.org/great-white-throne-judgment.html