This chapter takes up the question of what (if anything) might be wrong with religious beliefs that are held primarily on the basis of testimony, in light of the facts of religious diversity. The chapter first considers whether religious diversity entails that a religious believer’s testimony-based beliefs are not formed in a suitably epistemically reliable manner even conditional upon the truth of her religion. After casting doubt on this thought the chapter turns to look at the idea that testimony-based beliefs are subject to defeaters in light of awareness of religious diversity, and suggests that many such beliefs are not obviously so. According to the author’s diagnosis the problem, rather, is that believers who base their religious be...