In the beginning the body is the size of a pea. Then it grows to become a baby, then a child, a young boy, a youth, a grown man and an old man, and finally, when it becomes useless, the living entity changes into another body. The body is therefore always changing, and death is simply the ultimate change of the present body.
dehimo 'smin yatha dehe
kaumaram yauvanam jara
tatha dehantara-praptir
dhiras tatra na muhyati
"As the embodied soul continually passes, in this body, from boyhood to youth to old age, the soul similarly passes into another body at death. The self-realized soul is not bewildered by such a change." (Bg. 2.13)
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