Shona religion addresses Mwari, a high god, and two classes of spirit below him. The vadzimu are the ancestors of a family or lineage, approached at home, consulted about illness and misfortune, and honoured in the ceremony that brings a person home as an ancestor about a year after burial. The mhondoro are the spirits of dead chiefs and of the founders of territories, and they are concerned with land, with rain and with the legitimacy of rule.
Michael Bourdillon's ethnography sets out how the system works in practice. A medium, a svikiro, is possessed by a mhondoro and speaks for it, and the authority that follows is territorial rather than personal, so a medium in one place has nothing to say in another. Diviners and healers, the n'anga, occupy a separate and more individual role, dealing with affliction case by case.
The Mwari cult centred on the shrines of the Matopo hills is the region's largest institution, with messengers travelling to it from a wide area and a voice answering from the rock. It has been consulted through colonial rule and since. Christianity is now the majority allegiance, and the independent churches, some of them very large, work with the same categories of ancestor and spirit rather than around them.