Bhagavad Gita 7.6 · Krishna
Beginning and end of everything
एतद्योनीनि भूतानि सर्वाणीत्युपधारय।
अहं कृत्स्नस्य जगतः प्रभवः प्रलयस्तथा॥
etadyonīni bhūtāni sarvāṇītyupadhārayaahaṃ kṛtsnasya jagataḥ prabhavaḥ pralayastathā
Know that all beings come from these two. I am the origin of the whole universe, and its dissolution too.
What it means
Krishna says every being arises from these two natures, matter and life. And he himself is the prabhava, the origin, and the pralaya, the dissolution, of the entire universe. Everything begins in him and returns to him. Nothing is outside that circle.
The story
Arjuna fears the end of lives. Krishna places all endings, and all beginnings, within himself. Nothing that dies falls out of his care. It simply returns home.
In your life
Think of a wave rising from the ocean and falling back into it. It never left the ocean. When you face an ending, remember the ocean it returns to.
Everything begins and ends in the divine.