Dr. Ray’s Answer
I think there are far more job opportunities for secular counselors that religious counselors. However, as Scott mentioned a Christian counselor could always work as a secular counselor provided she met the criteria for licensing as some sort of mental health professional. How secure jobs of either type would be, in the sense of not being subject to layoffs or funding cuts I don't know.
I also agree with Scott that a Christian counselor might need additional training in theology or pastoral counseling to be effective.
Good luck with your career.
Ray Finn, Ph.D.