On the third day there was a wedding at Cana in Galilee, and the mother of Jesus was there. Jesus also was invited to the wedding with his disciples. When the wine ran out, the mother of Jesus said to him, “They have no wine.” And Jesus said to her, “Woman, what does this have to do with me? My hour has not yet come.” His mother said to the servants, “Do whatever he tells you.”
Now there were six stone water jars there for the Jewish rites of purification, each holding twenty or thirty gallons. 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), the master of the feast called the bridegroom and said to him, “Everyone serves the good wine first, and when people have drunk freely, then the poor wine. But you have kept the good wine until now.” This, the first of his signs, Jesus did at Cana in Galilee, and manifested his glory. And his disciples believed in him. John 2:1-11.
God is not bound by the rules of the natural sciences. He is not limited by time and space. After all, He created those things. He did not just create the world. He created both the known universe, and the unknown. And sometimes the unseen interrupts or invades the seen world.
This is what establishes Jesus as a conduit to God, and more. The old testament prophets sometimes revealed the power of the unseen world. Whether it’s parting the Red Sea, making the sun stand still, or calling down fire from heaven, these are the things that question our understanding of reality. If you think that your understanding is beyond questioning, and that the impossibility of divine intervention is a settled matter, you will have to reject God’s word, and eventually God Himself.