Sects have arisen within Christianity from time to time that have viewed nudity in a more positive light. For example, to the Adamites and the Freedomites, social nudity was an integral part of their ritual. The Adamites, an early Christian sect, practiced "holy nudism", engaging in common worship in the nude. During the Middle Ages, the doctrines of this obscure sect were revived: in the Netherlands by the Brethren of the Free Spirit and the Taborites in Bohemia, and, in a grosser form, by the Beghards in Germany. Everywhere, they met with firm opposition from the mainstream churches.