This is called "John the Revelator."

Tell who's that writin', John the Revelator
Tell me who's that writin', John the Revelator
Tell me who's that writin', John the Revelator
Wrote the book of the seven seals

Well God walked down in the cool of the day and called Adam by his name
He refused to answer, 'cause he was naked and ashamed
Tell me who's that writin', John the Revelator
Tell me who's that writin', John the Revelator
Tell me who's that writin', John the Revelator
Wrote the book of the seven seals

Now Christ had 12 apostles, and he led twelve away
Said "Watch with me one hour, until I go yonder and pray"
And tell me who's that writin', John the Revelator
Tell me who's that writin', John the Revelator
Tell me who's that writin', John the Revelator
Wrote the book of the seven seals

Christ came down Easter mornin', Mary and Margaret came to see
Said, "Go tell my disciples to meet me down in Galilee"
Tell me who's that writin', John the Revelator
Tell me who's that writin', John the Revelator
Tell me who's that writin', John the Revelator
Wrote the book of the seven seals