The Sabbath was a day set aside for rest and worship. God commanded a Sabbath because we need to spend unhurried time in worship and rest each week. A God who is concerned enough to provide a day each week for us to rest is indeed wonderful. To observe a regular time of rest and worship in our hurried world demonstrates the importance of God in our lives while having the extra benefit of refreshing our spirits.
Observe the Sabbath day, to keep it holy. Work six days and do everything you need to do. But the seventh day is a Sabbath to God, your God. Don't do any work - not you, nor your son, nor your daughter, nor your servant, nor your maid, nor your animals, not even the foreign guest visiting in your town. For in six days God made Heaven, Earth, and Sea, and everything in them; he rested on the seventh day. Therefore God blessed the Sabbath Day; he set apart as a holy day.
Reference used from The Message Bible and The Life Application Bible, KJV, Tyndale Publishers, Inc., Wheaton, IL