The fourth commandment

“Remember the Sabbath day, to keep it holy. Six days shalt thou labor, 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: 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.” – {PP 307.1}
The Sabbath is not introduced as a new institution but as having been founded at creation. It is to be remembered and observed as the memorial of the Creator’s work. Pointing to God as the Maker of the heavens and the earth, it distinguishes the true God from all false gods. All who keep the seventh day signify by this act that they are worshipers of Jehovah. Thus the Sabbath is the sign of man’s allegiance to God as long as there are any upon the earth to serve Him. The fourth commandment is the only one of all the ten in which are found both the name and the title of the Lawgiver. It is the only one that shows by whose authority the law is given. Thus it contains the seal of God, affixed to His law as evidence of its authenticity and binding force. – {PP 307.2}
God has given men six days wherein to labor, and He requires that their own work be done in the six working days. Acts of necessity and mercy are permitted on the Sabbath, the sick and suffering are at all times to be cared for; but unnecessary labor is to be strictly avoided. “Turn away thy foot from the Sabbath, from doing thy pleasure on My holy day; and call the Sabbath a delight, the holy of the Lord, honorable; and ... honor Him, not doing thine own ways, nor finding thine own pleasure.” Isaiah 58:13. Nor does the prohibition end here. “Nor speaking thine own words,” says the prophet. Those who discuss business matters or lay plans on the Sabbath are regarded by God as though engaged in the actual transaction of business. To keep the Sabbath holy, we should not even allow our minds to dwell upon things of a worldly character. And the commandment includes all within our gates. The inmates of the house are to lay aside their worldly business during the sacred hours. All should unite to honor God by willing service upon His holy day. – {PP 307.3}

Shabbat Shalom

Something interesting is these words Shabbat and Shalom.
The Hebrew word Shabbat literally means a ceasing or Stopping. The word is always used in the Hebrew bible for the Seventh day, the Shabbat, the day work ceases for the purpose of rest.
For example a verse in Leviticus 23 verse 3 says, "Six days shall work be done: but the seventh day is the Sabbath of rest, an holy convocation; ye shall do no work therein: it is the Sabbath of the LORD in all your dwellings."
The Hebrew meaning of the word Shalom comes from the root word Shalam, which is used in context of making restitution.
So the words "Shabbat Shalom" are put together, literally meaning "May your day of no work be peaceful," But it can have similar meanings of "May you become whole in your day of ceasing laborious work" or "May your find wholeness as you cease from work on the Seventh day."