Jesus is the Door and the Gate. No one enters without His approval.
Rev 20: 11Then I saw a great white throne and him who was seated on it. Earth and sky fled from his presence, and there was no place for them. 12And I saw the dead, great and small, standing before the throne, and books were opened. Another book was opened, which is the book of life. The dead were judged according to what they had done as recorded in the books. 13The sea gave up the dead that were in it, and death and Hades gave up the dead that were in them, and each person was judged according to what he had done. 14Then death and Hades were thrown into the lake of fire. The lake of fire is the second death. 15If anyone's name was not found written in the book of life, he was thrown into the lake of fire.
It does not seem justified to me to say that everyone who is at this judgement is not in the book of life. The implication seems to be that some WERE in the book of life.