Hi Elise,
I found these lyrics with chords. is this the one you are looking for?

Chorus:
G
I'm building up the wall, and I won't come down
C
I'm building up the wall, and I won't come down
G F#dim Em Cm6/Eb
I'm building up the wall, and I won't come do - own
G A7 D7 G
Building up the wall and I won't come down

Verse I:
The walls of
G
The walls of Jerusalem were broken down to the ground in shame
C G
But Nehemiah had a heart to rebuild them up again
C G F#dim Em Cm6/Eb
And when the enemy came to mock, Nehemiah stood his grou - nd
G A7 D7 G
He said, "I'm building up this wall, and I won't come down"

Verse II:
G
The devil he dropped by today, just to have a little chat with me
C G
He said "Son, you're workin' way too hard! Come on down and rest your feet!"
C G F#dim Em Cm6/Eb
Well I didn't even stop to take the time to turn arou - nd
G A7 D7 G
Because I'm building up the wall and I won't come down

Verse III:
G
The world is lookin' on; they just shake their heads and say
C G
"That wall's way to high! You don't have to live that way!"
C G F#dim Em Cm6/Eb
My answer is still the same, and it will never, ever cha - ange,
G A7 D7 G
Because I'm building up the wall and I won't come down

NOTE:
Key: G

I'm building on this wall and I'm not coming down
I'm building on this wall and I'm not coming down
171I'm building on this wall and I'm not coming down
I'm buildng on this wall and I won't come down