you skated around the last question. why cant a christian bookstore owner have in his qualifications "has to believe in the christian bible and follow biblical principles.. ie no openly gay applicants will be hired, no cheaters that state they are cheating on their spouses will be hired, not thieves that state they are thieves will be hired, etc, etc."
So that means if they can keep their business to themselves and off the internet(facebook, instagram, etc) all public social media. then sure you can be hired.
because in the eyes of the law, you can't discriminate based on hiring.
They can have whatever personal beliefs they want, but when/if they get investigated, they gotta keep their shyt straight.