Lyric discussion by toader 

Is it just me or does he change what he says in the chorus the second time around? Instead of "and that I see a darkness" it sounds more like "i'll know I see a darkness" ... and following on from the end of the last verse "this isn't all I see" might suggest that whatever happens in the future he knows that there's no escaping the darkness

I agree with the interpretation, he definitely says "I'll know I see a darkness" in the final chorus.

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