The text states that from the darkness emerged ether (or space). In turn, air emerged from ether, fire emerged from air, water emerged from fire, and earth emerged from water. From earth emerged the egg, which split to create atmosphere and land. Between atmosphere and land emerged the divine person (Purusha) with one thousand heads, one thousand eyes, one thousand arms, and one thousand feet, who created death.

Listen to this episode of  "How does the multiverse affect us? (Subal Upnishad)" of the podcast Upnishad Simplified by Dr. Shisham Aggarwal.

For more such information check out the book - https://www.amazon.in/s?i=stripbooks&rh=p_27%3ADr.+Shisham+Bansal&ref=dp_byline_sr_book_1

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