Almost all religions experience waves of enthusiasm and torpor. Periodically small group of enthusiasts—offended by the majority’s inattention to God—try to reform or revive a society’s religious culture. Some, such as the Protestant Reformers of the sixteenth century, do transform the wider society. Most recognise the unequal struggle and retreat into a righteous enclave: a separate sub-society in which the true faith can be cultivated and preserved free from contamination. This chapter describes the sexual deviance found in a number of ‘intentional communities’: so-called because, unlike such natural communities as hamlets, villages, and neighbourhoods, they are created by volunteers for a specific purpose. The first two examples come from the nineteenth century: the Oneida community in rural New York state and the Abode of Love in Spraxton in the English west country. The late twentieth-century examples are the Children of God communes in various countries, the Bergholz Amish community in eastern Ohio, Gloriavale in New Zealand, two tiny Australian examples, and US polygamous Mormon communities.