Blind Willy Johnson recorded John, the Revelator, in 1930. Here are two verses that don't appear in the Son House version:

Now who art worthy, crucified and holy
Bound up for some, Son of our God
Daughter of Zion, Judah's lion
He redeemed us, Jesus bought us with his blood.

Well Moses to Moses, watching the flock
Saw the bush where they had to stop
God told Moses, pull off your shoes
One of the flock, a well a you I choose.

Well, what's John a-writing? Ask the Revelator
What's John a-writing? Ask the revelator
What's John a-writing? Ask the revelator
A book of the seven seals.