My copy is on a rather dodgy tape of a tape of a tape recording, but this is how it sounds to me.

Brian

JOHN THE REVELATOR - Son House.

Tell me who's that writing? John the Revelator.
Tell me who's that writing? John the Revelator.
Tell me who's that writing? John the Revelator.
Wrote the Book of the Seventh Seal.

Who's that writing? John the Revelator.
Tell me who's that writing? John the Revelator.
Well, who's that writing? John the Revelator.
Wrote the Book of the Seventh Seal.

You know God walked down in the cool of the day,
Called Adam by his name.
And he refused to answer,
Because he's naked and ashamed.

Who's that writing? John the Revelator.
Who's that writing? John the Revelator.
Who's that writing? John the Revelator.
Wrote the Book of the Seventh Seal.

You know Christ had twelve apostles,
And three he led away.
Said, watch with me one hour,
Till I go yon and pray.

Tell me who's that writing? John the Revelator.
Tell me who's that writing? John the Revelator.
Who's that writing? John the Revelator.
Wrote the Book of the Seventh Seal.

Who's that writing? John the Revelator.
Tell me who's that writing? John the Revelator.
Who's that writing? John the Revelator.
Wrote the Book of the Seventh Seal.

Christ came on the Easter morning.
Mary and Martha was there to see.
God said Martha this what I want,
To meet me in Galilee.

Tell me who's that writing? John the Revelator.
Tell me who's that writing? John the Revelator.
Tell me who's that writing? John the Revelator.
Wrote the Book of the Seventh Seal.

Who's that writing? John the Revelator.
Who's that writing? John the Revelator.
Tell me who's that writing? John the Revelator.
Wrote the Book of the Seventh Seal. ^^