http://www.jewfaq.org/g-d.htm
G-d is Neither Male nor Female
This followed directly from the fact that G-d has no physical form.
As one rabbi explained it to me, G-d has no body, no genitalia,
therefore the very idea that G-d is male or female is patently
absurd. We refer to G-d using masculine terms simply for
convenience's sake, because Hebrew has no neutral gender; G-d is no
more male than a table is.
Although we usually speak of G-d in masculine terms, there are
times when we refer to G-d using feminine terms. The Shechinah, the
manifestation of G-d's presence that fills the universe, is
conceived of in feminine terms, and the word Shechinah is a
feminine word.
PS: Shechinah is more commonly spelt as Shekinah.
