Ok, this might be too far out there, but i always thought that with a few tweeks to the lyrics, Queen's Your My Best Friend would make a great Christian song:
Ooh you make me live
Whenever this world is cruel to me
I got you to help me forgive
Ooh you make me live now honey
Ooh you make me live
And a few other older rock songs:
Higher Love, Steve Winwood
Spirit in the sky, Norman Greenbaum
Sweet Lord, George Harrison