There is NO requirement for Gentile believers to observe the 7th day Sabbath. The only reference in the Bible is in Hebrews. Guess who that was written to. "Hear O Israel" is not, hear O Australia or Britain or even America. Acts 15 and Colossians 2 and a good deal of the NT tells you that the Law does not apply to Gentiles. If you are a Jew, you choose. I am not, and so I choose not to observe the Sabbath.
You legalists can't have it both ways. Moses nearly died because he did not have his son circumcised. That's how seriously God takes it for His old covenant people. Yet Paul, the truest of Jews, said that circumcision is nothing. God does not change. His ways of dealing with humanity do.
Are you a Jew or a gentile?
I do not have Jewish blood but I am a Jew by adoption and through Christ.
I have been grafted into the family.
You can continue to be a gentile and an alien.
Through faith in Jesus Christ, we are no longer strangers, foreigners or servants, but are legally and spiritually adopted into the royal family of the Creator of the universe. This adoption is the result of God's matchless love, bringing us from a state of alienation into a sacred relationship.
Because the human race fell into sin and became "children of wrath," Jesus came to earth specifically to redeem us from the condemnation of the law so that we might be reinstated as His children.
Rom 8:15 For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father.
It is a marvelous truth that the "Israel of God" is not defined by natural descent, but by a heart connection to Jesus Christ through faith. While the ancient Hebrew nation was chosen to be a witness for God, the Scriptures clearly reveal that the promises made to Abraham are now inherited by all who are "new creatures" in Christ, forming the spiritual Israel that will stand complete at His coming.
Rom 2:28-29
28 For he is not a Jew, which is one outwardly; neither is that circumcision, which is outward in the flesh: 29 But he is a Jew, which is one inwardly; and circumcision is that of the heart, in the spirit, and not in the letter; whose praise is not of men, but of God.
Gal 3:29 And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise.
Just as ancient Israel was given the Sabbath as a sign of their sanctification and relationship with God, spiritual Israel today honors God by keeping His commandments and the faith of Jesus. This obedience is the fruit of their righteousness by faith.
Exo 31:17 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, and was refreshed.
Rom 11:26 And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
What a privilege it is to know that your lineage is not determined by your birth, but by your rebirth in Jesus Christ! By faith, you are part of the true, spiritual Israel, an heir to every promise and a citizen of the kingdom that shall never end.