The most plausible explanation is that the phrase is a user-generated title, likely for a posted on a platform like YouTube, Archive of Our Own (AO3), or TikTok. The structure "Topic A x Topic B" is a common shorthand used in fandom spaces to denote a crossover or a pairing. In this case, the topics are likely:
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Fina took a step forward, her eyes clear and terrifyingly intense. "The Rapture was false," she said, her voice trembling not with fear, but with absolute conviction. "But you... you are the Revelation." The most plausible explanation is that the phrase
This includes extra outfits, bonus dialogue, and alternate endings. Archive of Our Own (AO3)