"Mother Jesus"?

Presiding Bishop-elect Schori Calls on "Mother Jesus"

This is after stating that, presumably, acts of homosexuality are not sinful...

The quote is in question:

Our mother Jesus gives birth to a new creation -- and you and I are His children.

My emphasis above...This should be a boon to those wishing to change the language of Sacred Scripture and remove any references to male nouns and pronouns. But I can help but wonder why it's "mother Jesus" followed by the possesive "His" later in the sentence...

Enjoy...