Only those whose names are written in the Lamb’s Book of Life will enter the New Jerusalem. God’s judgment upon the unsaved will be executed based upon the contents of several books. The most important book in judgment will be the book of life. Those who are not listed in the book of life will be thrown into eternal punishment. “And whosoever was not found in the book of life was cast into the lake of fire.” (Revelation 20:15)
What is the book of life? Does God have a physical book in which He keeps a list of all those who will be allowed to enter heaven? The idea of God’s record book is found scattered throughout the Bible. The first mention is in Exodus 32 when Moses pray for God to preserve rebellious Israel. Moses says, “Yet now, if thou wilt, forgive their sin- and if not, blot me, I pray thee, out of thy book which thou hast written.” Other mentions of a celestial book are found in the Old Testament, but not until the New Testament is a direct reference made to the book of life. The first use of the phrase “book of life” is in Philippians 4. There the apostle Paul describes his fellow workers in the ministry as those “whose names are in the book of life.”
Two references in the New Testament seem to refer to the book of life though they do use that phrase. In Luke 10 Jesus tells the disciples “rejoice that your names are written in heaven.” Hebrews 12 says those who are saved are part of the church of the firstborn, “whose names are written in heaven.”
The book of Revelation makes the most frequent mention to the book of life. During the time of the tribulation most of the world will worship the antichrist. Revelation 13 and 17 say that those who worship the antichrist are ones “whose names are not written in the book of life of the Lamb”. Revelation 21 describes the New Jerusalem, the great heavenly city where the saved will enjoy eternal bliss. The only ones who will enter God’s city are those who “are written in the Lamb’s book of life.”
The Bible does not aim to give an explanation of the book of life. Any man’s description of the book of life is based upon deductions from the Bible’s descriptions of how the book is used. What is clear in Scripture is that the book of life is a heavenly record of those who are saved. Those whose names are written in the book of life will enter into eternal life. Those whose names are not in the book of life will not.
Little else can be said with certainty. The book of life may be a just a metaphor of God’s accuracy of in keeping track of those who are saved. This author prefers the more literal reading that the book of life is a written record of all those who genuinely have eternal life. The clear truth is most important. God knows those that are His. Those who have been saved will have eternal life. Those who have not been saved will not. God will not err in distinguishing between the saved and the lost.