Most Christians traditionally worship on Sunday. Sunday worship is partly attributed to Sabbatarianism, the view that one day of the week should be reserved for religious observance and worship, as required by Old Testament laws regarding the Sabbath (Exodus 20:8, 31:12-18). In this view, man is to abstain from all labor except that which is necessary for the welfare of family and society. This interpretation of the law contends that only on the literal Sabbath, the seventh day of the week (Saturday), can the requirements of the law be met. Semi-sabbatarianism followers, as early as the fourth century A.D., believed essentially as the sabbatarianists did, with the exception that they transferred its demands from Saturday to Sunday, the first day of the week (the day on which Christ arose from the dead). Theologians of that period, particularly in the Eastern Church, were teaching the practical identity of the Jewish Sabbath (Saturday) and the Christian Sunday. Interestingly, a legend r...