“Yet there are some in the church in Sardis who have not soiled their clothes with evil. They will walk with me in white, for they are worthy. All who are victorious will be clothed in white. I will never erase their names from the Book of Life, but I will announce before my Father and his angels that they are mine.“Anyone with ears to hear must listen to the Spirit and understand what he is saying to the churches.” Revelation 3:4-6
In Scripture the robing of the saint is ever an expression of the saint’s own service and character. In the description of the white-robed multitude in Revelation, it is said that their white robes are the righteousness of the saints—not the righteousness of God, but the righteousness of the saints. This is to say, that fidelity of character and of service shall presently have its outward manifestation. They walk in the justification of God. God gives these garments to each one (Rev 6:11) through the work of the Messiah on the cross. These garments are not earned.
God puts the names of all people into the Book of Life. In Exodus 32:32 Moses seems to imply that his name was written in the book, presumably the book of life. In the next verse God says to Moses that ‘Whoever has sinned against Me I will blot out of My book.’ Those who sin (everyone) need a new way to be part of the Kingdom. This is, of course, through faith in Jesus, the Lamb of God; and through faith in Him, our names are now written in the Lamb’s Book of Life. Only those whose names are found in the Lamb’s Book of Life will be saved. “Everyone who acknowledges me publicly here on earth, I will also acknowledge before my Father in heaven.” (Matthew 10:32) “In the same way, there is joy in the presence of God’s angels when even one sinner repents.” (Luke 15:10)