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Looking for the words to: But this one thing I know

First verse:
I do not know the depths of Jesus' Love
Or why He came to earth from heaven above
Nor why he bore the cross up calvary
And gave his precious life so willingly

chorus:
But this one thing I know
That when the crimson flow
dropped to the earth below
It fell on me
My eyes were opened wide
I say him crucified
It was for me he died
On calvary