śhrī bhagavān uvācha
kutastvā kaśhmalamidaṁ viṣhame samupasthitam
anārya-juṣhṭamaswargyam akīrti-karam arjuna || 2||
klaibyaṁ mā sma gamaḥ pārtha naitat tvayyupapadyate
kṣhudraṁ hṛidaya-daurbalyaṁ tyaktvottiṣhṭha parantapa ||3||

My Understanding : Krishna explains that birth and death are beyond human control. Arjuna, burdened by guilt, believes he will be responsible for the deaths caused by the war. However, Krishna reminds him that no one lives forever; death is inevitable, whether it occurs now or years later. Arjuna must rise above his doubts, confront his enemies, and uphold dharma.