Bhagavad Gita · Chapter 2: The Path of Understanding
Bhagavad Gita 2.17
अविनाशि तु तद्विद्धि येन सर्वमिदं ततम् ।
विनाशमव्ययस्यास्य न कश्चित् कर्तुमर्हति ॥
avināśi tu tadviddhi yena sarvamidaṃ tatam | vināśamavyayasyāsya na kaścit kartumarhati ||
Know that by which all this is pervaded to be indestructible. No one can bring about the destruction of this imperishable one.
Modern context
The reality Krishna is describing is not locked inside individual bodies: it pervades everything there is. And nothing, no weapon and no person, has the power to end it. Whatever we fear losing, the ground of our being is not on the list.