Rock Chords (Transposable):

 
Chorus
C G D G
My rock, my fortress, refuge in the storm
C G D G
My strength, my friend that I depend upon
C G D G C G D G
My Rock, You're my Rock, my Rock
C G D G C G D G
My Rock, You're my Rock, my Rock

Verse
G B C G
Solid, unshakable, ageless, unchangable
G B C G
Constant, faithful, steadfast, unbreakable
Bm C Bm C
All that I need forever You will be

Bridge
Em C Em
A firm foundation ever true, I will build my life on You
Em C
I will build my life on You

Ending
C G D G C G D G
My Rock, my Rock