Mercy is love
unconditional  
through total forgiveness
and without judgement of wrongs,
bestowed with insurmountable compassion
upon those deserving
and
those undeserving.

It changes not only the receiver
but the giver as well
creating
peace, harmony, kindness, goodness,
and humbleness
which instills
unconditional love
full of mercy 
completing
the circle of grace.