The Lamb's Book of Life is God's Family Album with the names of all those saved through the Blood of the Lamb. At the Great White Throne at the end of time, Christ will open this Book to verify that the names of those who had rejected God and His salvation were not included in it (Revelation 20:11-15). So they are judged according to what is written in the books of their lives. Whether or not you are written in the Book of Life defines your eternal destiny (Revelation 20:12,15, 21:27). It is the Lamb’s Book, for if anyone's name is included, it is because they have been redeemed by His Blood. Derek goes through the various Scriptures that refer to this Book (Daniel 12:1, Revelation 3:5, Luke 10:20, Philippians 4:3, Isaiah 49:16). On the one hand, the Bible talks about changes being made in this Book as time goes on, which reflects human freedom of choice. Many assume that our name is written in the Book of Life when we trust in Christ, but that is not supported by Scripture, which only talks of names of people being blotted out for rejecting God (Exodus 32:32,33, Revelation 22:19). In fact, everyone who is alive physically is written in the Book of Life at their conception, but if they die in a state of sin (having reached the age of accountability) their names are blotted out (Psalm 69:28). On the other hand, the Bible says that the final list of names in the Book has been foreknown and fixed by God from eternity, and so these names were written in His Book from before the foundation of the world (Revelation 17:8, 13:8), which reflects God's Sovereignty. Thus the Book can be seen from the 2 viewpoints of eternity and time, from God's eternal viewpoint and from man's temporal viewpoint. The eternal Book of Life is unchanging, but its manifestation in time necessarily changes, because of human free-will. At the end of time, as time moves into eternity, the temporal form of the Book will assume its eternal (fixed) form, which was written by God from the foundation of the world. Either your sins will be blotted out by the Blood of Christ (Isaiah 44:22, Acts 3:19), or your name will be blotted out of His Book (John 3:16,36).