a great white throne – to symbolize the righteousness of this judgment, to which no man can answer.
and Him who sat on it – this is the Judgment seat of Christ (John 5:22; 2 Cor 5:10).
from whose presence – the literal translation is face. This goes back to Genesis 4:14, Cain could not look on the face (presence) of Christ. From whose face the earth fled. Now, no man can look upon Him, meaning there is none without guilt.
I saw the dead – all of the dead stand before the throne (Heb 9:27; 2 Cor 5:10).
and books were opened – that record every man’s deeds, including every idle word spoken (Matt 12:36); every angry word (Matt 5:22) and every act, whether good or bad.
and another book was opened – the book of life, for whoever hears Christ’s words and believes, has already passed from judgment into life (John 3:16; 5:24).
the sea gave up the dead – the sea throughout Revelation refers to baptism/salvation. These are the saved who resurrect.
death and hades gave up their dead – that is the unsaved.
death and Hades were thrown in the lake of fire – those who rested in Hades are thrown into the lake of fire. But those from “the sea” are saved.
not written in the Book of life – see Rev 13:8; 17:8.