Are you a disciple?

John 2:33 “This, the first of his miraculous signs, Jesus performed at Cana, in Galilee.  He thus revealed his glory, and his disciples put their faith in him.” I want to tell you what happened: I put water into a glass this morning.  I then said to the water–become wine.  Nothing happened.  Thinking maybe I had the wrong type of glass I chose another bigger glass, much fancier and filled it with cold water with ice.  I then said—become wine.  Still nothing.  Can anyone explain Why?  It worked for Jesus–why not me?