What does it mean that names are written in the Lamb's Book of Life?

The concept of names being written in the Lamb's Book of Life is rooted in the assurance of eternal life provided by Christ. It symbolizes God's sovereign grace in choosing individuals for salvation and securing their place in His family through faith in Christ. This doctrine reassures believers that nothing can separate them from God's love and that their salvation is rooted in Christ's finished work, not in their efforts. Believers take comfort in knowing they are eternally secured in God’s promise.