Book 6 resists treating life and death as absolute opposites. They are different phases inside one larger process viewed from two worlds.
That does not make death small. It makes death legible. If earthly life is a course of preparation, then death is not absurd interruption but transition into the next environment for which this one was forming us.
This is one reason Unificationist talk about the spirit world keeps returning to formation. What continues is not mere awareness but the person that earthly life has been shaping.