do i ask her out?

Hey, what you are experiencing is every man's dream. LOL! Well, if you really like one of them, there's no harm in asking her out. If the other 2 female friends ignore you because they are jealous, thats's not your problem, so don't worry about it. Finally, there's no rule saying that church mates cannot date one another.

wow, how lucky you are, you must be an attractive guy . i think you should choose 1 of them that you like most. but if you can't do that because you don't want to hurt 2 others, then you don't have to ask anyone of them.