I could be letting my imagination run a bit wild but I think this song could be about a Christian genocide carried out by some Satanic force. Mocking Christianity by calling it the "plague of this world." The references to mass graves also makes me think genocide. The raven is considered a bad omen in Christian folklore because if I'm not mistaken Christians viewed any animal that fed on the flesh of men to be evil. During the Bubonic Plague, ravens would be seen feasting on the corpses of all the deceased.
I could be letting my imagination run a bit wild but I think this song could be about a Christian genocide carried out by some Satanic force. Mocking Christianity by calling it the "plague of this world." The references to mass graves also makes me think genocide. The raven is considered a bad omen in Christian folklore because if I'm not mistaken Christians viewed any animal that fed on the flesh of men to be evil. During the Bubonic Plague, ravens would be seen feasting on the corpses of all the deceased.