When someone that shares the same faith as you but has absolutely no intention of helping you nor wants to get invloved with your personal problems. Also is a typical expression used by overly churched individuals who are incapable of giving a real heart to heart advice.
Isaac: Dude whats wrong
Josh: Man my dog just got run over by a semi truck
Isaac: Im sorry man but umm hey! Jesus loves you!
Josh: uh? thanks?