To overcome is to master the lower thought and clean the mind, and the flesh answers by refining itself into light: white raiment is the body purified, radiance worn instead of the old stained garment. The name that stays written is the way, the method a person has taken up and made their own; once the practice is truly walked it cannot be erased from them.
The book of life is the spine itself, sealed with 7 seals along its length, the living record of the energy that has risen through it. The right hemisphere, the higher mind, holds that name and acknowledges it as the energy climbs to complete the work.
White raiment: the flesh refined into light, the body cleaned and made luminous by the mastered mind
Book of life: the human spine, sealed with the 7 seals of the chakras, the inner record of what has risen through it
Father: the right hemisphere of the brain, the seat of higher mind that receives and confirms the risen energy