Scriptures Regarding Keeping The Sabbath

"And on the seventh day God ended his work which he had made; and he rested on the seventh day from all his work which he had made.  And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made." Genesis 2:2-3

"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 thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that is within thy gates:" Exodus 20:8-10

"Ye shall keep the sabbath therefore; for it is holy unto you: every one that defileth it shall surely be put to death: for whosoever doeth any work therein, that soul shall be cut off from among his people.  Wherefore the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations, for a perpetual covenant." Exodus 31:14,16

"And now, behold, two hundred years had passed away, and the people of Nephi had waxed strong in the land. They observed to keep the law of Moses and the sabbath day holy unto the Lord. And they profaned not; neither did they blaspheme. And the laws of the land were exceedingly strict." Jarom 1:5

There are more scriptures in regards to the matter.