The album is "Avalon Blues: A Tribute to the Music of Mississippi John Hurt," Vanguard CD 79582, 2001.

I listened to a sound sample, and the words I heard Gillian Welch singing are:

...outshines the sun.
I got a mother in Beulah land that outshines the sun.
I got a mother in Beulah land, way beyond the sky.

Oh, come on and go to Beulah land and outshine the sun.
Come on and go to Beulah land and outshine the sun.
Come on, go to Beulah land, way beyond the sky.

I got a...

I also listened to a couple of sound samples of Mississippi John Hurt singing BEULAH LAND, and the lyrics seem to match. His song is a version of one that is commonly called GLORY LAND or DO LORD. Lyrics of his song and several related versions are posted in the thread Lyr Req: Do Lord, Oh Do Lord, and in related threads that are linked at the top of the page.