What a captivating and haunting spiritual. That genre of the blues doesn't get nearly the attention as our more familiar 12 bar. Can't you just hear this being performed in a country chapel, encouraging communion and urging the Holy Spirit to have its way?
I have been immersed in The Revelation for a couple of years, now, to the point of transcribing it for a standalone handout, sans commentary. Listened to it on tape and have yet to tire of it.