There is not a single scripture in OT or NT that states that the sabbath is just for "Jews"
Actually there are many that do just that.
Maybe just these two examples might help:
(Ex31:16,17) "The Israelites must keep the Sabbath.....it is an enduring sign between me and the people of Israel...."
(Deut 5:12) "Remember that you (the Israelites)became slave in the land of Egypt and that Jehovah your God brought you out of there.....That is why Jehovah your God commanded you (the Israelites) to observe the Sabbath day."
Those texts don't say the sabbath is
only for "jews". Again, Zipporah wasn't a Jew, neither the mixed multitude. Moses was Hebrew of Levi.
To begin with, Jesus Christ is the true Israel, the anti-type, the Israel that is not the type as Jacob was.
Jesus is Israel (
Matthew 2:13-15;
Hosea 11:1;
his children are his disciples;
Hebrews 2:13;
Isaiah 8:16,18;
John 13:33), the true "overcomer" (
John 16:33;
Revelation 3:21), the real "Prince" with God (
Isaiah 9:6;
Daniel 8:11,25, 9:25, 10:13,21, 11:22, 12:1; Acts 3:15, 5:31;
Revelation 1:5), being Lord over His own house, whose house are we (
Psalms 98:3;
Hebrews 3:6;
Jeremiah 31:33), who himself is the "elect" (
Isaiah 42:1;
Matthew 12:18;
1 Peter 2:6) of the Father, in whom all the promises of God find their realization (
2 Corinthians 1:20). The promises made by God were all based upon condition (
Exodus 19).
Mat 2:13-15; Hos 11:1; Jer 31:33; Rom 9:6-8; Heb 2:13; Isa 8:16,18; Jhn 13:33, 16:33, 17:12, 18:9, 21:5; 1 Cor 15:46; 2 Cor 1:20; Gal 6:16; Heb 3:6, 8:8,10; Rev 3:21
'Israel' "after the flesh", as a 'nation', is left desolate (
Matthew 23:38;
Luke 13:35), to bear no more fruit ever again (
Matthew 21:19), cursed, withered away (
Mark 11:21), dried up from the roots (
Mark 11:20), "twice dead" (
Jude 1:12), and the axe already laid at their root (
Matthew 3:10;
Luke 3:9), cut down and to be thrown into the fire.
The New [or Everlasting] Covenant is only made with the spiritual “Israel” (Jesus Christ, the "elect" of the Father;
Isaiah 42:1;
Matthew 12:18-20), this “Judah” (
Revelation 5:5) and His “house” (
2 Corinthians 1:20 KJB - For all the promises of God in him are yea, and in him Amen, unto the glory of God by us.; – for Christ Jesus, the true “Israel” is the “elect” of God, and thus all who choose to be in Him; see
Isaiah 42:1, 45:4, 65:9 KJB)
Ecc 12:13 Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of
[the] man.
Ecc 12:14 For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil.
See that verse 13? it reads in Hebrew:
Ecc 12:13 סוף דבר הכל נשׁמע את־האלהים ירא ואת־מצותיו שׁמור כי־זה כל־
האדם׃
Ecc 12:14 כי את־כל־מעשׂה האלהים יבא במשׁפט על כל־נעלם אם־טוב ואם־רע׃
Just in case you don't read Hebrew, here's transliterated Hebrew:
12:13 šôf Dävär haKol nish'mä et-häélohiym y'rä w'et-mitz'wotäyw sh'môr Kiy-zeh Käl-
häädäm
12:14 Kiy et-Käl-maáseh häélohiym yävi v'mish'Pä† al Käl-ne'läm im-†ôv w'im-rä
Thus, all mankind of Adam are to keep God's commandments. Not only Adam the first, but also Adam the Last, for the Sabbath was made for "the man":
Mar 2:27 And he said unto them, The sabbath was
made for [the] man, and not
[the] man for the sabbath:
Mar 2:27 και ελεγεν αυτοις το σαββατον
δια τον ανθρωπον εγενετο ουχ
ο ανθρωπος δια το σαββατον
Gen 1:27 so called LXX καὶ ἐποίησεν ὁ θεὸς
τὸν ἄνθρωπον, κατ᾿ εἰκόνα θεοῦ ἐποίησεν αὐτόν, ἄρσεν καὶ θῆλυ ἐποίησεν αὐτούς.
Notice:
1Co 15:45 And so it is written, The first man Adam was made a living soul;
the last Adam was made a quickening spirit.
1Co 15:46 Howbeit that was not first which is spiritual, but that which is natural; and afterward that which is spiritual.
1Co 15:47 The first man is of the earth, earthy:
the second man is the Lord from heaven.
So is Jesus another (last) Adam, the second "man", according to the texts?
The "sabbath" was "made" (creation; Genesis 2:1-3; Exodus 20:11) for "the man", yes?
Good, now read:
Col 1:16 For by
him [Jesus] were all things
created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were
created by him, and
for him:
Col 1:16 HNTDD כי־בו נ
ברא כל אשר בשמים ואשר בארץ כל הנראה וכל אשר־איננו נראה הן כסאות וממשלות הן שררות ורשיות הכל נ
ברא על־ידו ולמענהו׃
Therefore, Paul, under inspiration of the Holy Ghost, who speaks what Jesus says, coming in His name, says that the Sabbath was made/created "for him [Jesus]", and thus all in him, even as it was for the original Adam and all in him.