I've seen a lot of different versions which are good, but not entirely correct.  
Here is my take on the iTunes Originals version.  
I think it's pretty accurate.  
Just listen to the song, to get the rhythm and chord placements. 
There is a transition between the G and the Bb2 in the chorus.
If you want to play it, it would be something like a G/A chord.
However the song is great without it.

Please rate!

Intro/Verses: C  Csus4  C  G/C  Fmaj7/C  F  Fmaj7/C

Verse 1
I'm finding myself at a loss for words, 
And the funny thing is, it's okay.
The last thing I need, is to be heard,
But to hear, what you would say

Chorus:
                CWord (x32010@1)of God speak,
                           GWould (320003@1)you pour down like rain
           Bb2Washing (135211@6)my eyes to see
     FYour (133211@1)majesty
                CTo (x32010@1)be still and know
                    GThat (320003@1)You're in this place
              Bb2Please (135211@6)let me stay and rest
         FIn (133211@1)Your holiness
            CWord (x32010@1)of God speak

(Repeat Intro)

Verse 2
I'm finding myself in the midst of You
Beyond the music, beyond the noise
All that I need is to be with You
And in the quiet hear Your voice

[REPEAT CHORUS 2x]

I'm finding myself at a loss for words
And the funny thing is it's okay