What is the “lamb’s book of life” and how do I know if my name is in it?
All such Christians are in preparation of character in the present, in order to serve as “priests of God and of Christ” to uplift the world of mankind in the Millennial kingdom (Revelation 20:6).
We term this commitment “consecration,” drawing from Leviticus 8:33, which speaks of the days of “consecration” of the priests in the Old Testament. The seven days of their consecration are a picture, or illustration, of our preparation during our lifetime, to serve with Christ to bless mankind in the kingdom.
If we have made this commitment before God, it is customary practice to symbolize this decision by water baptism. This is symbolic of our immersion into the will of God. Thereafter, we look forward by faith to a heavenly resurrection, providing that we follow this “narrow … way, which leadeth unto life,” to the end of our present life (Matthew 7:14). If we do this, we may rest in faith that our names are registered in the book of life.
The precise expression “Lamb’s Book of Life” appears in Revelation 21:27. The context there, from Revelation 20 forward, is about the kingdom of Christ established at the close of the present time called the “Gospel Age.” In this case it refers to the world of mankind recovered and committed during the “Millennial Age.” The heavenly calling will have closed by that time — the faithful of the world then will receive everlasting life on earth, as offered to Adam and Eve at the beginning.