I found this in testing interpretation of the Miracle at Cana in the book “The Name of God is Meracy”.
I think of the miracle at the “Wedding at Cana,” the first miracle, which was literally “dragged” from Jesus by his mother. Jesus transforms water into wine, into fine wine, the best wine. He does it using water from the urns that were needed for ritual purification, for the washing away of one’s spiritual impurities. The Lord does not produce the wine out of nothing, he uses the water that “washed away” sins, water that contains impurities. He performs this mire acle with something that to us appears impure. He transforms it, making it clear that “where sin increased, Grace overflowed all the more”
Picture courtesy: http://www.swordofthespirit.net