A Horse Called Golgotha Lyrics

Lyric discussion by Solomundy 

Cover art for A Horse Called Golgotha lyrics by Baroness

I have no idea what the song is about but I think the title comes from the book Suttree, by Cormac Mccarthy. When the title character is hallucinating during a fever he sees a general riding into battle on a horse called Golgotha, or something. I don't know if this is a reference to something else, but I couldn't find anything on google one way or the other. The audiobook is on youtube.