Really easy. For the intro and first verse you play this:

Plucked Riff:
|-----------------------------------------------|
|----1--1---1-----1--1---1-----1--1---1-----1---|
|---2--2---2-----2--0---0-----2--2---2-----2----|
|-----3--^2-------3--^2---------3--^2-----------|
|-0----------3------------0------------3--------|
|-----------------------------------------------|

Verse:

                 Am                    C
You provide the Fire
                     Am                C
I’ll provide the sacrifice
                  Am                   C
You provide the Spirit
                  Am
And I will open up the inside

Chorus:

          C  
Fill Me Up God        
          Am
Fill Me Up God
          C
Fill Me Up God
          Am
Fill Me Up God
          C
Fill Me Up

Bridge:
F C x4

Chorus 2:

         F
Love Of God
        C
Overflow
      F
Permeate
          C
All my soul