And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them. And I saw the dead, small and great, stand before God; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works. And the sea gave up the dead which were in it; and death and hell delivered up the dead which were in them: and they were judged every man according to their works. And death and hell were cast into the lake of fire. This is the second death. And whosoever was not found written in the book of life was cast into the lake of fire. (Revelation 20:11-15 KJV)=========================================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. And I heard a great voice out of heaven saying, Behold, the tabernacle of God is with men, and he will dwell with them, and they shall be his people, and God himself shall be with them, and be their God. And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away. And he that sat upon the throne said, Behold, I make all things new. And he said unto me, Write: for these words are true and faithful. (Revelation 21:1-5 KJV)========================================And he said unto me, These sayings are faithful and true: and the Lord God of the holy prophets sent his angel to shew unto his servants the things which must shortly be done. Behold, I come quickly: blessed is he that keepeth the sayings of the prophecy of this book. And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be. I am Alpha and Omega, the beginning and the end, the first and the last. Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city. For without are dogs, and sorcerers, and whoremongers, and murderers, and idolaters, and whosoever loveth and maketh a lie. (Revelation 22:6, 7, 12-15 KJV)
I don't know that any of it does. It was a vision by John. There were times when explanations were given, but fir the most part it was left up to the audience to figure out what things meant. It seems to be more of a metaphorical, apocalyptic prophecy that occurred during John's life. You can pick this up by reading 1-3 John and the then-immanent coming of the Antichrist. But I'm sure John attempted to interpret his vision in part as eschatological, so don't throw the whole thing out. It at least gives us clues as to what the first century Christians thought the afterlife might be like.