avyaktādīni bhūtāni vyakta-madhyāni bhārata
avyakta-nidhanānyeva tatra kā paridevanā || 28||
āśhcharya-vat paśhyati kaśhchid enan
āśhcharya-vad vadati tathaiva chānyaḥ
āśhcharya-vach chainam anyaḥ śhṛiṇoti
śhrutvāpyenaṁ veda na chaiva kaśhchit || 29||
dehī nityam avadhyo ’yaṁ dehe sarvasya bhārata
tasmāt sarvāṇi bhūtāni na tvaṁ śhochitum arhasi || 30||
swa-dharmam api chāvekṣhya na vikampitum arhasi
dharmyāddhi yuddhāch chhreyo ’nyat kṣhatriyasya na vidyate || 31||
yadṛichchhayā chopapannaṁ swarga-dvāram apāvṛitam
sukhinaḥ kṣhatriyāḥ pārtha labhante yuddham īdṛiśham || 32||

My Understanding : In this universe, nothing is truly created anew, nor is anything ever completely destroyed. Everything we see has existed in some form since the beginning of the universe. The same is true for the soul—when the body perishes, the soul transitions to a new body but never ceases to exist. Krishna reminds Arjuna that his sole duty is to fight this war, as fulfilling his role is his ultimate responsibility.