Verse 2.13 : Sankhya Yoga "Transcendental Knowledge"

Krishna uses a simple, relatable analogy to explain reincarnation. Throughout our physical life, our body changes dramatically from a baby to an old person, yet our sense of 'I' (the observer) remains identical. Death is simply another such transition—the soul leaving the old, worn-out body and entering a new one. A wise person (dhīraḥ) who understands this process does not get bewildered (na muhyati) by death.

We accept the change of our body from childhood to old age without grieving because we know we are still the same person inside. Reincarnation is just an extension of this process: the soul drops the physical envelope and assumes a new one. The wise (dhīraḥ) are those who are steady, identifying with the unchanging observer inside rather than the changing physical form. Therefore, they remain calm at death.

Our bodies are constantly changing—cells die and regenerate every day. We are not the same physical structure we were ten years ago, yet our identity is intact. When we realize that our identity is anchored in consciousness, we can handle aging, sickness, and death with grace. Aging is not the decay of 'us,' but the natural cycle of the physical instrument.