In Supernatural Season 14, God left his mark on Sam, and that will continue to play a role in S15.
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In Season 14, God appeared to the Winchesters and handed over the Equalizer...
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...a gun that can kill anything, but at a terrible price:
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It inflicts a mirror wound on the person who fired it.
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When God revealed he twisted their lives for his own amusement, Sam shot God with the Equalizer.
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The bullet struck God in the shoulder; in return, Sam suffered the same wound.
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According to TVInsider, Sam's mark will bring him "anguish and mysterious revelations."
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However, the report didn't offer any further details about what those revelations might be.
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Considering the nature of the gun, though, it may have connected Sam to the deity without his realizing it.
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Supernatural returns Thursday, Oct. 10 at 8 p.m. ET/PT on The CW for its final season.
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