Bhagavad Gita 2.25

अव्यक्तोऽयमचिन्त्योऽयमविकार्योऽयमुच्यते।
तस्मादेवं विदित्वैनं नानुशोचितुमर्हसि।।2.25।।

Avyaktoyamachintyoyamavikaryoyamuchyate
Tasmadevam viditvainam nanushochitumarhasi

Simple meaning, written by AIIt is said to be unmanifest, unthinkable, and unchangeable. Knowing it in this way, you should not grieve.

Whole chapter