न जायते म्रियते वा कदाचि न्नायं भूत्वा भविता वा न भूयः। अजो नित्यः शाश्वतोऽयं पुराणो न हन्यते हन्यमाने शरीरे॥
na jāyate mriyate vā kadāci nnāyaṃ bhūtvā bhavitā vā na bhūyaḥ ajo nityaḥ śāśvato'yaṃ purāṇo na hanyate hanyamāne śarīre
Meaning
It was not born; it will never die, nor, once having been, can it cease to exist. Unborn, eternal, ever-enduring, yet most ancient, the spirit does not die when the body is dead.
Simple meaning
Krishna describes the soul: it is never born and never dies. It is eternal and ancient, and it does not die when the body dies. Your deepest self is beyond loss.
In real life
At a funeral, a son finds comfort in the idea that his mother's essence hasn't vanished, which helps him grieve without despair.
A person facing a serious illness draws strength from the belief that who they truly are is more than their body.
Try this today: Spend two quiet minutes noticing the part of you that is aware of your thoughts, the part that has been the same since childhood.
English translation by Shri Purohit Swami (1935), public domain. Sanskrit text in the public domain. About Duvidha