2.12 There was never a time Krishna speaks

न त्वेवाहं जातु नासं न त्वं नेमे जनाधिपाः
न चैव न भविष्यामः सर्वे वयमतः परम्

na tvevāhaṁ jātu nāsaṁ na tvaṁ neme janādhipāḥ
na chaiva na bhaviṣhyāmaḥ sarve vayamataḥ param

There was never a time when I did not exist, nor you, nor these kings; and there will never be a time when any of us cease to be.

Explanation

There was never a time when I did not exist.

Nor you, nor these kings — and there will never be a time when any of us cease to be.

Note who is included. Not just Arjuna and Krishna: these kings, the men in both armies. The consolation, if it is one, covers the people he is afraid of killing.

Word by word

na: never
tu: however
eva: certainly
aham: I
jātu: at any time
na: nor
āsam: exist
na: nor
tvam: you
na: nor
ime: these
jana-adhipāḥ: kings
na: never
cha: also
eva: indeed
na bhaviṣhyāmaḥ: shall not exist
sarve vayam: all of us
ataḥ: from now
param: after