The citizens of heaven and the book of life.
Those whose names are written in the book of life are the people of God's kingdom, who can enter heaven- the kingdom of eternal life. It is a great joy and honor that our names are written in the book of life.
Lk 10:17-20 The seventy-two returned with joy and said," Lord, even the demons submit to us in your name." He replied, "...However, do not rejoice that the spirits submit to you, but rejoice that your names are written in heaven."
The fact that their names are written in heaven means that their citizenship is in heaven.
Php 3:19-21 ..But our citizenship is in heaven. And we eagerly await a Savior from there, the Lord Jesus Christ, who, by the power that enables him to bring everything under his control, will transform our lowly bodies so that they will be like his glorious body.
If anyone's name is not found written in the book of life, it means that he or she cannot enter into salvation. So, it is a great blessing and grace from God that our names are recorded in the book of life.
There are so many people in the world who claim to believe in God. However, not all of them have the citizenship of heaven. The "Lamb's book of life" is in Zion where God dwells. Therefore, when our names are recorded in Zion, the Church that keeps the feasts of God, they can be registered in the Lamb's book of life(Ps 87:5-6, Ps132:13-18, Isa33:20-24, Mt16:19)
Do you want to World Mission Society Church of God where there is the Book of Life?