When the wine ran out, Jesus' mother said to him, "They have no wine."

 John does not relate the story of any wonder that Jesus did in Jerusalem at the Passover season; but Jesus did do wonders there; and there were many who, when they saw his powers, believed in him. The question John is answering here is--if there were many who believed in Jerusalem right at the beginning, why did Jesus not there and then set up his standard and openly declare himself? 