One verse

Bhagavad Gita 2.20

2.20

न जायते म्रियते वा कदाचिन् नायं भूत्वा भविता वा न भूयः | अजो नित्यः शाश्वतोऽयं पुराणो न हन्यते हन्यमाने शरीरे ||२-२०||

na jāyate mriyate vā kadācin nāyaṃ bhūtvā bhavitā vā na bhūyaḥ . ajo nityaḥ śāśvato.ayaṃ purāṇo na hanyate hanyamāne śarīre ||2-20||

na
never
jāyate
takes birth
mriyate
dies
vā
either
kadācit
at any time (past, present or future)
na
never
ayam
this
bhūtvā
having come into being
bhavitā
will come to be
vā
or
na
not
bhūyaḥ
or is again coming to be
ajaḥ
unborn
nityaḥ
eternal
śāśvataḥ
permanent
ayam
this
purāṇaḥ
the oldest
na
never
hanyate
is killed
hanyamāne
being killed
śarīre
the body

For the soul there is neither birth nor death at any time. He has not come into being, does not come into being, and will not come into being. He is unborn, eternal, ever-existing and primeval. He is not slain when the body is slain.