Lyric discussion by TheConsequencer 

This is obviously about the tribulations/rapture of Revelation. I don't have any specific verse references, but plagues, chaos, death, the ultimate destruction of god's enemies, brother turning against brother ("corrupted by poisoned minds and all that you trust would kill in a beat of heart"), and the antichrist (Don't mourn for the child he's destined to wield decay) are all mentioned here. Also, SEVEN is a pretty clear Revelation reference.

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