Bhagavad Gita 2.28

अव्यक्तादीनि भूतानि व्यक्तमध्यानि भारत।अव्यक्तनिधनान्येव तत्र का परिदेवना॥

avyaktādīni bhūtāni vyaktamadhyāni bhārata |avyaktanidhanānyeva tatra kā paridevanā ||

Beings are unmanifest in their beginning, manifest in their middle state, O Arjuna, and unmanifest again in their end. What is there to grieve about?

The end and beginning of beings are unknown; we only see the intervening formations. So, what is there to grieve about?

Our plain-language meaning of this verse is waiting for scholar review.