A bona-fide occupational qualification?

A woman who had taught Sunday school for 54 years at a Baptist church in Watertown, NY, has been fired, because the the minister's interpretation of a passage in the Bible.

Two questions arise here. Was this an employment situation? (Was she being paid or receiving benefits, for example?)

And, if it was, would gender qualify as a bona fide occupational qualification in this case? Not being a labor lawyer, I don't know, but I'd be surprised if it were.