on things too great for me to understand

I held the hand of the old man ever since he went blind
then everything changed, nothing is the same
but I never left his side

I´ve seen the walls, and they all fall down
I´ve felt the wind, its whipped us all
if you have give a coin or two,
if you don´t, a smile will do

Have mercy on me
Have mercy on me
Have mercy, have mercy
Have mercy on me

(thanks Trevor / the way much)