15 And anyone not found written in the Book of Life was cast into the lake of fire.

Matthew Henry's Commentary on Revelation 20:15

Commentary on Revelation 20:11-15

(Read Revelation 20:11-15)

After the events just foretold, the end will speedily come; and there is no mention of any thing else, before the appearing of Christ to judge the world. This will be the great day: the Judge, the Lord Jesus Christ, will then put on majesty and terror. The persons to be judged are the dead, small and great; young and old, low and high, poor and rich. None are so mean, but they have some talents to account for; and none so great, as to avoid having to account for them. Not only those alive at the coming of Christ, but all the dead. There is a book of remembrance both for good and bad: and the book of the sinner's conscience, though formerly secret, will then be opened. Every man will recollect all his past actions, though he had long forgotten many of them. Another book shall be opened, the book of the Scriptures, the rule of life; it represents the Lord's knowledge of his people, and his declaring their repentance, faith, and good works; showing the blessings of the new covenant. By their works men shall be justified or condemned; he will try their principles by their practices. Those justified and acquitted by the gospel, shall be justified and acquitted by the Judge, and shall enter into eternal life, having nothing more to fear from death, or hell, or wicked men; for these are all destroyed together. This is the second death; it is the final separation of sinners from God. Let it be our great concern to see whether our Bibles justify or condemn us now; for Christ will judge the secrets of all men according to the gospel. Who shall dwell with devouring flames?