Let us understand what death is ?
When one was born as newborn child, when his mind or memory was not fully developed, that time he was not aware of this world, his relatives, and the process of birth & death. when he became young, he has learned about this world, how are his relatives, what is birth ? what is death ? What is old age ?
What has been changed in from his journey from a newborn child to youth , is his worldly knowledge, he has learned more, acquired more beliefs.
Suppose if was born in isolated island, where there were no human civilization, than he can never knew about where he is ? What is death ? how humans are born ?
Let understand what Vedanta says about death ?
When one learn Vedanta, he came to know that he is the soul ( Atman) , but he has been mistaking himself as physical body.
1. He associates himself with the qualities of physical body like short, tall, fat , birth, color & death
2. One thinks that “I am this body”, when it goes I goes. But that not the correct, as in reality Atman never dies nor is born.
3. This body change various forms such as child, young and old.
But this Atman remains same throughout the changes of body.
When one understand the truth that he is not a physical body, he is consciousness(atman ) He removes his fear of death
Lets understand another point of view based on Srimad Gita
Even if one thinks oneself as a limited physical body, which is subjected to birth & death, than also it is nature’s law, one who has come, has to go.
As per one’s Karma, one will be born to a new place with a new body. there again he will create new friend & relatives
Here is a quote form Bhagavat Gita, where Lord Krishna explain the death as nature’s law
“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.”
– Bhagavat Gita Chapter 2 Verse 13