A great example of a religious philosopher was Nietzsche who wrote "God is Dead" as a warning that declining faith could lead to rising immorality. Ironically, his fellow Christians have been failing to understand his message for over a hundred years, because they as a whole lack literacy, or morality.

According to philsurvey, 80% of academic philosophers in the anglophone world are. About ten percent are agnostic and ten percent are theists.

All the theisms are in philosophies in their way.