Which brings up an interesting fact about certain branches of Christianity. I guarantee you that you can find gay clergy in the Catholic, Anglican and Episcopal churches, despite the supposed "sinfulness" of homosexuality.* This is because, unlike many of the evangelical branches, there is a stronger distinction between sinner and sin.Sure. But ignorance is never an acceptable excuse for any form of -ism or similar behaviour. It just isn't. And such obnoxious behaviour - unlike homosexuality - actually is a choice, and choosing to say such things is a choice. One can't necessarily control how one feels, but one can control what one says.
IOW, they condemn the behavior, not the person.
So a gay priest or nun is perfectly acceptable, as long as they adhere to the same vows of chastity and celibacy, etc. as their heterosexual brethren and sisters in the clergy. Convincing them the same standard should apply to vows of marriage, OTOH, is probably going to take generations.
* I cannot speak to the psychology of said individuals. How they can separate their sexual orientation from their identity is baffling to me. Orwell would smile at the doublethink involved.