“Jesus said to the servants, "Fill the jars with water." And they filled them up to the brim. And he said to them, "Now draw some out and take it to the master of the feast." So they took it. When the master of the feast tasted the water now become wine, and did not know where it came from (though the servants who had drawn the water knew).”
John 2:7-9 ESV
The act of Jesus turning water into wine is a miracle. Given all that we know about water, it is impossible for water to turn into wine. The laws of chemistry do not merely tell us it is unlikely that water can turn into wine, or even probable, they tell us it is impossible. The miracle of Jesus produced wine out of nothing, it did not come from the water, it replaced the water, and he did it instantly. The water molecules in those jars could not explain the sudden transformation into wine, Jesus was the only explanation.
These Miracles are needed because same causes create the same effects. Apple trees create apples, water produces water and sinners produce sin. To create something new and different there must be an outside agent to create a new thing. A miracle is needed to disrupt the chain of events in order to bring about real change, and since we are sinners then a disruption in the chain of events is exactly what we need.
Nothing good dwells in us (Romans 7:18), we lack good in ourselves and so we cannot produce good. We need the power of the gospel so that we can become a new creation, that is, we can have our sins forgiven and be made righteous. The miracle of the gospel of Jesus is like the miracle of water to wine. All that we know about sin and evil is that it cannot turn into good. Sin and evil cannot by chance or probability become good, so salvation should be impossible. Sinners cannot become good, the unholy and defiled cannot transform into that which is holy and pure. Sin cannot become righteousness, like water cannot become wine. But Jesus wanted the water to become wine and Jesus wants sin to become righteousness, so he replaced the water with wine and he replaces our sin with his righteousness.
The way Jesus works these miracles rivals the miracle itself. There is no great noise and no great show to accomplish the miracle. When he changed water to wine, Jesus sitting in his place says no word and makes no motion, all he does is will it to work. He willed the change of the chemical properties in that water and it was enough. So he wills dead sinners every day to become alive and his will is enough. The blessing of the gospel turns water into wine and so in Christ, we are water turned into wine.
(Peter, Raquel, Analia, Elias, and Julian)