Here's one of the arguments I found online. Don't forget I'm not Christian nor anti-Christian...just exploring all the arguments for and against the various claims and anti-claims :-)
"In the Fourth Gospel of John, there is the wedding at Cana. To this wedding Jesus is specifically "called" -- which is slightly curious, since he had not yet embarked on his ministry. More curious still, however, is the fact that his mother "just happens" as it were, to be present as well. In fact, her presence would seem to be taken for granted. The plot thickens when it is Mary (Jesus' mother) who not merely suggests to her son, but in effect orders him to replenish the wine. She behaves quite as if she were the hostess. It is also noteworthy that the servants comply with Mary and Jesus' orders.
One might also wonder if Jesus' first major miracle, the transmutation of water into wine, could have been used for such a banal purpose as some obscure village wedding. And why should two "guests" at a wedding take on themselves the responsibility of catering -- a responsibility that, by custom, should be reserved for the host? "
From here [www.halexandria.org]