IdiomDaily LifeRussian

книга за семью печатями (kniga za sem'yu pechatyami)

Meaning: Something utterly mysterious and incomprehensible; a complete enigma.

Literally: A book under seven seals

Example: “Налоговые правила для меня книга за семью печатями.” — The tax rules are a closed book to me.

English equivalent: A closed book

Equivalents in other languages

Origin: The image alludes to the sealed book in the biblical Book of Revelation, representing secrets that are locked away and inaccessible.

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