The Book of Life

Concise Bible Dictionary:

Registry of persons’ names as living. One (also called simply God’s book) may be a book of those who only have a name to live, and consequently whose names may be blotted out (Ex. 32:32-3332Yet now, if thou wilt forgive their sin; and if not, blot me, I pray thee, out of thy book which thou hast written. 33And the Lord said unto Moses, Whosoever hath sinned against me, him will I blot out of my book. (Exodus 32:32‑33); Psa. 69:2828Let them be blotted out of the book of the living, and not be written with the righteous. (Psalm 69:28); Rev. 3:55He that overcometh, the same shall be clothed in white raiment; and I will not blot out his name out of the book of life, but I will confess his name before my Father, and before his angels. (Revelation 3:5); Rev. 22:1919And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book. (Revelation 22:19)). Another is a book of the saved, from which none will be erased (Phil. 4:33And I entreat thee also, true yokefellow, help those women which labored with me in the gospel, with Clement also, and with other my fellowlaborers, whose names are in the book of life. (Philippians 4:3); Rev. 13:88And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the Lamb slain from the foundation of the world. (Revelation 13:8); Rev. 17:88The beast that thou sawest was, and is not; and shall ascend out of the bottomless pit, and go into perdition: and they that dwell on the earth shall wonder, whose names were not written in the book of life from the foundation of the world, when they behold the beast that was, and is not, and yet is. (Revelation 17:8); Rev. 20:12, 1512And 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. (Revelation 20:12)
15And whosoever was not found written in the book of life was cast into the lake of fire. (Revelation 20:15); Rev. 21:2727And there shall in no wise enter into it any thing that defileth, neither whatsoever worketh abomination, or maketh a lie: but they which are written in the Lamb's book of life. (Revelation 21:27)). A third (called simply “the book,”) contains the names of the remnant of Israel (Dan. 12:11And at that time shall Michael stand up, the great prince which standeth for the children of thy people: and there shall be a time of trouble, such as never was since there was a nation even to that same time: and at that time thy people shall be delivered, every one that shall be found written in the book. (Daniel 12:1)).