If the lyrics sound vaguely familiar, it’s because you might know the Moby version of this song.  I won’t link to it because I don’t want to dilute the effect of Cash’s interpretation, which I find to be an intoxicating combination of chilling, inspiring, heartening, and terrifying.  With all the horrific things going on around the world these days, even the most committed atheist wants some powerful entity, higher or not, to cut down those who do such terrible things.