The phrase comes from the Russian translation of the biblical creation line in Genesis, traditionally rendered as let there be light. In Russian internet culture the solemn wording is often reused jokingly for mundane moments, and voice changer versions exaggerate that contrast. Short clips of the line circulate on soundboards and in meme edits because the meaning is widely understood even by non Russian speakers. Its lasting appeal is the gap between the grand, world creating announcement and the small, ordinary thing actually being illuminated or revealed on screen.