The simplest way of describing the cracks running down the middle of the 80m-strong Anglican family is to say that the traditionalists, reflecting the conservative social mores of Africa, are at odds with liberals from the rich world, especially over the issue of homosexuality. To explain the Africans’ conservatism, many point out that they are on the front line of a contest with Islam; and that missionary work in Africa was carried out by evangelicals who reflect a rather fundamentalist strain of British Christianity. All that is correct up to a point, and it explains why bishops from Kenya, Nigeria,...