Epiphany in a sentence

noun ( pl. -nies) (also Epiphany)

the manifestation of Christ to the Gentiles as represented by the Magi (Matthew 2:1-12).

• the festival commemorating this on January 6.

• a manifestation of a divine or supernatural being.

• a moment of sudden revelation or insight.

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As a literary term it means a massive change of world view (on the part of a character) following a sudden revelation.