Here's what I hear from the Blind Willie McTell recording. As you can see, I need some help.
-Joe-

AIN'T IT GRAND TO LIVE A CHRISTIAN

Ain't it grand to live a Christian, ain't it grand,
Ain't it grand to live a Christian,
You got Monday Tuesday, Wednesday, Thursday, Friday, Saturday,
Lord, all day Sunday, ain't it grand.
Ain't it grand to live a Christian, ain't it grand

Ain't it grand to live in union, ain't it grand,
Ain't it grand to live in union,
When you got Monday Tuesday, Wednesday, Thursday; Lord, Friday, Saturday,
And all day Sunday, ain't it grand.
Ain't it grand to live a Christian, ain't it grand

Ain't it grand to love your (member?), ain't it grand,
Ain't it grand to love your (member?),
When you got Monday Tuesday, Wednesday, Thursday, Friday, Saturday,
Lord, all day Sunday, ain't it grand.
Ain't it grand to live a Christian, ain't it grand

Ain't it grand to love sinners, ain't it grand,
Ain't it grand to love your sinners,
When you got Monday Tuesday, Wednesday, Thursday, Friday, Saturday,
Lord, all day Sunday, ain't it grand.
Ain't it grand to live a Christian, ain't it grand

Ain't it grand to keep prayin', ain't it grand,
Ain't it grand to keep prayin',
When you got Monday Tuesday, Wednesday, Thursday, Friday, Saturday,
Lord, all day Sunday, ain't it grand.
Ain't it grand to keep prayin', ain't it grand