The phrase "majority faith" refers to the religion that is practiced by the most people in a specific region or country. It means that most of the population follows and believes in this particular religion. Full definition
It is more a function of the majority faith than any universal discovery of absolute truth. (religion.blogs.cnn.com)
We live in a basically Christian nation, whether or not you like it, and of course, the majority faith is the one which needs to be accomodated most. (religion.blogs.cnn.com)
Through all the discussion of the East African revival, the reader may forget that Catholicism is the majority faith in Angola, Gabon, Burundi, Rwanda, and Congo. (firstthings.com)