Bhagavad Gita Chapter 2, Verse 18

अन्तवन्त इमे देहा नित्यस्योक्ताः शरीरिणः | अनाशिनोऽप्रमेयस्य तस्माद्युध्यस्व भारत ||

antavanta ime dehā nityasyoktāḥ śarīriṇaḥ anāśino 'prameyasya tasmād yudhyasva bhārata

These bodies of the eternal, indestructible, and immeasurable embodied soul are said to be finite. Therefore, fight, O Bharata.

After establishing the soul's indestructibility, Krishna delivers his practical conclusion: 'tasmāt yudhyasva'—therefore, fight. The body is 'antavanta' (finite, having an end), but consciousness is 'nitya' (eternal), 'anāśina' (indestructible), and 'aprameya' (immeasurable—beyond comprehension). This isn't about violence; it's about action despite fear. When you know your deepest self can't be destroyed, you can act courageously in a world where everything else is temporary. For Arjuna, this means fulfilling his warrior duty. For you, it means doing what's right without being paralyzed by fear of consequences.