The field encompassed by this collection on 'Religion, Sexuality, and Spirituality' is a vast and controversial one. It encompasses both normative and non-normative sexual identities and behaviours in the so-called 'world religions' (Judaism, Christianity, Islam, Buddhism, and Hinduism) and also such modes of being and conduct in the multitudinous indigenous religions, new religions and spiritualities, and smaller long-established traditions (for example, Zoroastrianism, Sikhism, Shinto, and so on).