http://www.jewish-history.com/catechism/catech06.htm
Chapter VII.
The Ten Commandments
1. What are the Ten Commandments?
Those celebrated commandments which God the Lord communicated himself to the people of Israel on Mount Sinai, without the intervention of a prophet; which means that the people heard them from God himself, and not from Moses, who received the other laws first from the Lord, and afterwards told them to the people.
"And the Lord spoke with you out of the midst of the fire; you heard the voice of words, but ye saw no similitude, only ye heard a voice. And He declared unto you his covenant, which He commanded you to perform, the Ten commandments, and He wrote them upon two tables of stone." Deut. 4:12, 13.
2. In what light would you regard these Ten Commandments?
The Ten Commandments are the everlasting fundamental principles of the divine law, and are to be observed during all times, and throughout every generation. We may call them the Divine Constitution, according to which the other statutes have been enacted; and every other commandment has reference to one of the other of them, whether it regards the worship of the Lord, or our intercourse with other men.
"The Lord our God made with us a covenant on Horeb. Not with our forefathers made the Lord this covenant, but with ourselves, who are here all alive this day. Face to face the Lord spoke with you on the mount, from the midst of the fire. I stood between the Lord and you at that time, to tell unto you
the word of the Lord, for ye were afraid of the fire, and ye ascended not the mount." Ibid. 5:2-5.
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33. What are the words of the FOURTH commandment?
"Remember the Sabbath day to keep it holy; six days thou shalt labor, and do all thy work; but the seventh day is the Sabbath in honor of the Lord thy God: on it thou shalt not do any work, neither thou, nor thy son, nor thy daughter, thy man-servant, nor thy maid-servant, 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 is in them, and rested on the seventh day; therefore, the Lord blessed the Sabbath day and hallowed it."
34. What are we taught by this precept?
We should out of love and reverence to the Lord regard as holy that day which He has set apart as devoted to his service, and do nothing to profane it. God is the Master of our labor, the Possessor of our bodies, and, as such, He demands of us that we, his servants, should cease from labor one day in seven,
and this on the last day of that period which He instituted as the week from the first creation of man upon the earth.
"Ye shall keep my Sabbaths, and reverence my sanctuary: I am the Lord." Lev. xxvi. 2.
"And say unto them, Hear ye the word of the Lord, ye kings of Judah, and all Judah, and all the inhabitants of Jerusalem, that enter in by these gates: Thus saith the Lord, Take heed to yourselves and carry no burden on the Sabbath day;
nor bring it in by the gates of Jerusalem; neither carry forth a burden out of your houses on the Sabbath day, neither do ye any work, but hallow ye the Sabbath day, as I commanded your fathers." Jer. 17: 20-22.
35. What is the meaning and object of the Sabbath?
The Sabbath is a sign of the covenant between us and our Creator, by which we are to be sanctified, and acknowledge that we are sincerely convinced of our subjection to his will.
"And the Lord spoke unto Moses, saying, Speak thou also unto the children of Israel, saying, Verily my Sabbaths ye shall keep; for it is a sign between me and you throughout your generations, that ye may know that I am the Lord who sanctify you.--
And the children of Israel shall keep the Sabbath, observing the Sabbath throughout their generations, for a perpetual covenant. It is a sign between me and the children of Israel for ever; for in six days the Lord made heaven and earth, and on the seventh day He rested." Exod. 31: 12-17.
36. How shall we sanctify the Sabbath?
We shall sanctify the Sabbath by abstaining from labor and business, and spend it in devotional exercises and contemplating the word and works of God.
"Ye shall keep the Sabbath, for it is holy unto you; every one that defileth it shall surely be put to death; for whosoever doth any work thereon,
that soul shall be cut off from among his people." Exod. 31:14.
http://www.jewish-history.com/catechism/catech07.htm
It is clear that the Sabbath was only given to Isreal. We Gentiles were not slaves in Egypt.