Lampetians is the name of one of the heretical sects which, on pretense of promoting sanctity by an ascetic life, made the Christian Sabbath a fast-day.
There was also another sect of this name in the 17th century, the followers of Lampetius, a Syrian monk, who pretended that, as a man is born free, a Christian, in order to please God, ought to do nothing by necessity; and that, therefore, it is unlawful to make vows, even those of obedience. To this doctrine he added the views of the Arians, Carpocratians, and other sects. The Lampetians formed a branch of the MESSALIANS SEE MESSALIANS (q.v.).