A class on Bhagavad Gita 2.30 given by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada on August 31, 1973 in London.
Bhagavad Gita 2.30
dehī nityam avadhyo ’yaṁ
dehe sarvasya bhārata
tasmāt sarvāṇi bhūtāni
na tvaṁ śocitum arhasi
O descendant of Bharata, he who dwells in the body can never be slain. Therefore you need not grieve for any living being.