This chapter introduces the main texts and teachings on sex, marriage and family life in six major world religions – Judaism, Christianity, Islam, Confucianism, Buddhism, and Hinduism. While each of these traditions offers unique perspectives on the fundamentals of domestic life, all of them have developed comparable teachings and practices on marital fitness and capacity, marital consent and property exchange, engagements and marriages, wedding and rituals, roles for spouses and children, sexuality and sexual expression, legitimate and illegitimate children, marital dissolution and post-marital support, death and inheritance. Many of these are ancient religious teachings and practices, however, are now heavily challenged by the forces of modernization and globalization.