You'd think I'd know by now  the difference between right and wrong  The sad truth is I do,   so why do I so often fake the truth  embrace the night instead of trusting you    I long to be a man of God and burn this bridge behind me  but alone I seem condemned to lose my way    Yet when I'm weak Lord you are strong that's what your word  reminds me  so I call on your strength to see me thru each and every day    (Chorus):  Purity come down wash over me and cleanse me from my sin  Renew my soul, I give you full control let all my darkness end  again and again    And when I think that I have fallen one too many times  Your spirit speaks to me, reminds me that forgiveness  is so much more than a state of mind your grace has set me free    And I could never fall so far that I'm beyond the mercy  that was bought and paid for by redeeming blood    And seventy times seven isn't too much to forgive me  so I dive into this life brand new beneath the deep refining flood    (Repeat chorus)    And though the glitter of temptation  may seek to bind me to a life  that's filled with guilt and shame, but I can rest in peace  'cause my captured heart has been released  by a love that's broken thru the chains    (Repeat chorus)