For some lines of work being a member of a certain religion can be the edge. For example, to get the job of editor-in-chief of a christian publication, being a christian is almost necessary. Those hiring know the person has the assumptions of that religion down cold. I didn't apply for a freelance opportunity with a Jewish organization because, not being Jewish, I didn't know its nuances and taboos. Of course, I would not be applying from a position of strength.
Then there are professional contexts in which one's religion shouldn't be part of personal branding. Employers are skittish about having overt signs of religion in their workplace. At the very least, those might be inappropriate. The more serious matter is that wearing a crucifix or Star of David could alienate customers and clients.
Yet, a job searcher has as a smartphone message, "Have a good day in Jesus." Rarely does she get an interview. When she does, she ends it with, "Have a blessed day." As yet she has not landed a job.