" In Hebrew, the word Sabbath means “rest.” The purpose of the Sabbath dates back to the Creation of the world, when after six days of labor the Lord rested from the work of creation. When He later revealed the Ten Commandments to Moses, God commanded that we “remember the sabbath day, to keep it holy.” Later, the Sabbath was observed as a reminder of the deliverance of Israel from their bondage in Egypt. Perhaps most important, the Sabbath was given as a perpetual covenant, a constant reminder that the Lord may sanctify His people.
In addition, we now partake of the sacrament on the Sabbath day in remembrance of the Atonement of Jesus Christ. Again, we covenant that we are willing to take upon us His holy name. "

― Russell M. Nelson , Accomplishing the Impossible: What God Does, What We Can Do