1 Thus the heavens and the earth were finished, and all the host of them. 2 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. 3 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. Gen 2:1-3 (KJV)
How could the Sabbath be only for Jews, when it was instituted 2000 years before there ever was a Jew?
1 Thus saith the Lord, Keep ye judgment, and do justice: for my salvation is near to come, and my righteousness to be revealed. 2 Blessed is the man that doeth this, and the son of man that layeth hold on it; that keepeth the sabbath from polluting it, and keepeth his hand from doing any evil. 3 Neither let the son of the stranger, that hath joined himself to the Lord, speak, saying, The Lord hath utterly separated me from his people: neither let the eunuch say, Behold, I am a dry tree. 4 For thus saith the Lord unto the eunuchs that keep my sabbaths, and choose the things that please me, and take hold of my covenant; 5 Even unto them will I give in mine house and within my walls a place and a name better than of sons and of daughters: I will give them an everlasting name, that shall not be cut off. 6 Also the sons of the stranger, that join themselves to the Lord, to serve him, and to love the name of the Lord, to be his servants, every one that keepeth the sabbath from polluting it, and taketh hold of my covenant; 7 Even them will I bring to my holy mountain, and make them joyful in my house of prayer: their burnt offerings and their sacrifices shall be accepted upon mine altar; for mine house shall be called an house of prayer for all people. 8 The Lord GOD which gathereth the outcasts of Israel saith, Yet will I gather others to him, beside those that are gathered unto him. Isaiah 56:1-8 (KJV)
Sorry, scripture just does not support your theory that the Sabbath was and is just for the Jews.
22 For as the new heavens and the new earth, which I will make, shall remain before me, saith the Lord, so shall your seed and your name remain. 23 And it shall come to pass, that from one new moon to another, and from one sabbath to another, shall all flesh come to worship before me, saith the Lord. Isaiah 66:22-23 (KJV)
Apparently we will be keeping it in heaven also. All flesh will worship the Lord on His Sabbath in heaven.
27 And he said unto them, The sabbath was made for man, and not man for the sabbath: 28 Therefore the Son of man is Lord also of the sabbath. Mark 2:26-28 (KJV)
Straight from the mouth of Christ, the Sabbath was made for man, not just the Jews.
English Words used in KJV:
not tr 4
miscellaneous translations 3
[Total Count: 559]
from <G435> (aner) and ops (the countenance; from <G3700> (optanomai)); man-faced, i.e. a human being :- certain, man.
—Strong's Talking Greek & Hebrew Dictionary