The eleventh chapter of the Bhagavad Gita is Vishwaroopa Darshana Yoga. In this chapter, Arjuna requests Krishna to reveal His Universal Cosmic Form that encompasses all the universes, the entire existence. Arjuna is granted divine vision to be able to see the entirety of creation in the body of the Supreme Lord Krishna.
Having merely seen Your mouths made terrible with (their) teeth and resembling the fire of Dissolution, I have lost the sense of direction and find no comfort. Be gracious, O Lord of gods, O Abode of the Universe.OPEN VERSE
And into You (enter) all those sons of Dhrtarastra along with multitudes of the rulers of the earth; (also) Bhisma, Drona and that son of a Suta (Karna), together with even our prominent warriors. They rapidly enter into Your terrible mouths with cruel teeth! Some are seen sticking in the gaps between the teeth, with their heads crushed!OPEN VERSE
As the numerous currents of the waters of rivers rush towards the sea alone so also do those heroes of the human world enter into Your blazing mouths.OPEN VERSE
As moths enter with increased haste into a glowing fire for destruction, in that very way do the creatures enter into Your mouths too, with increased hurry for destruction.OPEN VERSE
You lick Your lips while devouring all the creatures from every side with flaming mouths which are completely filling the entire world with heat.OPEN VERSE