Possibly about the rapture. The chorus referencing the blowing of horns and the bars

In the blink of an eye, the faithful go where they are made whole
So the story goes, if the dead comin' home

and “Finest spirit getting lifted” reference this.

Although, it seems not the most worthy people are being saved. People are “singing murder ballads” and “looking for a body” as they are floating up to heaven. The notion of needing to be a good person to go to heaven has been turned on it’s head.