Bhagavad Gita 2.20

न जायते म्रियते वा कदाचिन्नायं भूत्वा भविता वा न भूयः।अजो नित्यः शाश्वतोऽयं पुराणोन हन्यते हन्यमाने शरीरे॥

na jāyate mriyate vā kadācinnāyaṃ bhūtvā bhavitā vā na bhūyaḥ |ajo nityaḥ śāśvato'yaṃ purāṇona hanyate hanyamāne śarīre ||

It is not born, nor does it ever die; after having been, it again does not cease to be; unborn, eternal, changeless, and ancient, it is not killed when the body is killed.

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.

Our plain-language meaning of this verse is waiting for scholar review.