What does the Bible say about being written in the book of life?

The concept of being 'written in the book of life' is a significant theme in Scripture, indicating those whom God has predestined for salvation. In Revelation 13:8, it is noted that only those whose names are written in this book will avoid spiritual death. This assurance is echoed in Luke 10:20, where Jesus instructs His disciples to rejoice not in their authority but in the fact that their names are recorded in heaven. This emphasizes the security and special status of the elect in God's eyes, affirming their eternal life through Christ's redemptive work.