Just a little info:
Remember the sabbath day, to keep it holy. Six days shalt thou labour, and do all thy work: But the seventh day is the sabbath of the LORD your God: in it you shall not do any work, you, nor your son, nor your daughter, your manservant, nor your maidservant, nor your cattle, nor your stranger that is within your gates: For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it.
Sabbath as day
For more details on this topic, see Biblical Sabbath.
The term "Sabbath" derives from the Hebrew shabbat (שבת), "to cease", which was first used in the Biblical account of the seventh day of Creation (Genesis 2:2-3). Observation and remembrance of Sabbath is one of the Ten Commandments (the fourth in the original Jewish, the Eastern Orthodox, and most Protestant traditions, the third in Roman Catholic and Lutheran traditions). Most people who observe Biblical Sabbath regard it as having been instituted as a "perpetual covenant [for] the people of Israel" (Exodus 31:13-17), a sign in respect for the day during which God rested after having completed the Creation in seven days (Exodus 20:8-11); Sabbath desecration was originally officially punishable by death (Exodus 31:15).
[edit] Sabbath as week
For more details on this topic, see Seven-day week.
By synecdoche (naming a part for the whole), the term "Sabbath" also came to mean simply a "se'nnight" or seven-day week in Jewish sources by the time of the Septuagint, namely, the interval between two Sabbaths. Jesus's parable of the Pharisee and the Publican describes the Pharisee as fasting "twice a week" (Greek dis tou sabbatou, literally, "twice of the Sabbath").
In Christianity, both those who observe the seventh day as Sabbath and those who observe the first day as Sabbath consider themselves "Sabbatarian" and regard Sabbath as "Lord's Day", each group believing its position to be taught by the Bible; similarly for others who hold to strong Sabbath principles.
[edit] First-day Sabbath
For more details on this topic, see Sabbath in Christianity.
In most Christian denominations (Roman Catholic, some Eastern Orthodox, and most Protestant), "Sabbath" is a synonym of "Lord's Day" (Sunday), which is kept in commemoration of the resurrection of Christ, and often celebrated with the Eucharist. It is often the day of rest, and usually the day of communal worship. The Lord's Day is considered both the first day and the "eighth day" of the seven-day week (or, in some calendars, Sunday is designated the seventh day of the week as also in the ISO 8601 standard). Relatively few Christians regard first-day observance as entailing all of the ordinances of Shabbat. Members of The Church of Jesus Christ of Latter-day Saints (Mormon) faith [[1]] generally follow the stronger of Christian Sabbatarian traditions, avoiding shopping, leisure activities, and idleness on the first day, and avoiding work unless absolutely necessary; in Tonga, all commerce and entertainment activities cease from midnight Saturday until midnight Sunday, and the Constitution declares Sabbath to be sacred forever. Sometimes the Lord's Day is observed by those who believe Sabbath corresponds to Saturday but is obsolete. In Oriental Orthodoxy, the Ethiopian Orthodox Tewahedo Church has observed both Sunday Lord's Day and Saturday Sabbath in different ways for several centuries, as have other Eastern Orthodox traditions. As another minority view, some modern Christians uphold Sabbath but do not limit its observance to either Saturday or Sunday, instead advocating rest on any chosen day of the week, or advocating Sabbath as instead a symbolic metaphor for rest in Christ.
[edit] Seventh-day Sabbath
For more details on this topic, see Sabbath in seventh-day churches.
Several Christian denominations observe Sabbath in similar manner as in Judaism, but observance ends at Saturday sunset instead of Saturday nightfall. Seventh Day Baptists have observed Sabbath on Saturday since the mid-17th century, and influenced the similar but larger Seventh-day Adventist group toward that doctrine in the mid-19th century. They and others believe that keeping seventh-day Sabbath is a moral obligation arising out of the Ten Commandments that honors God as Creator and Deliverer. They also use "Lord's Day" to mean the seventh day, based on Scriptures in which God calls it "my day" and "of the LORD". Adventists popularized the question of defining Sabbath worldwide on a round earth; some seventh-day Sabbatarians make use of the International Date Line, while others (such as some Alaskan Adventists) observe Sabbath according to Jerusalem time. Many of the Lemba in southern Africa, like some other African tribes, are Christians yet claim common descent from the Biblical Israelites, keep one day a week holy like Shabbat, and maintain many beliefs and practices associated with Judaism.