I'm not sure exactly what you're saying here. Romans 14 states pretty unquivicably that celebration of the Sabbath is an issue of "personal faith" and not one of law:
The command to honor the Sabbath day and keep it holy was given to Israel at a specific point in time. Perhaps some had honored it as a statement of "personal faith" before, but it did not become a matter of "corporate" faith until Moses came down from Sinai. And, as I mentioned earlier, with the new covenant the honoring of the Sabbath has again become a personal matter.
MATHEW 5:17": Think not that I am come to
destroy the law, or the prophets: I am not come to
destroy, but to fulfill.
"18": For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled."
Is all fulfilled???
There is only one law that has been taken away/fulfilled and it is mentioned here in HEBREWS 10;
1": For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect.
"2": For then would they not have ceased to be offered? because that the worshippers once purged should have had no more conscience of sins.
"3": But in those sacrifices there is a remembrance again made of sins every year.
"4": For it is not possible that the blood of bulls and of goats should take away sins.
"5": Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, but a body hast thou prepared me:
"6": In burnt offerings and sacrifices for sin thou hast had no pleasure.
"7": Then said I, Lo, I come (in the volume of the book it is written of me,) to do thy will, O God.
"8": Above when he said, Sacrifice and offering and burnt offerings and offering for sin thou wouldest not, neither hadst pleasure therein; which are offered by the law;
"9": Then said he, Lo, I come to do thy will, O God. He taketh away the first, that he may establish the second.
"10": By the which will we are sanctified through the offering of the body of Jesus Christ once for all.
"11": And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins:"
The law concerning relationship conduct remains as confirmed here in;
James, chapter 2
"1": My brethren, have not the faith of our Lord Jesus Christ, the Lord of glory, with respect of persons.
"2": For if there come unto your assembly a man with a gold ring, in goodly apparel, and there come in also a poor man in vile raiment;
"3": And ye have respect to him that weareth the gay clothing, and say unto him, Sit thou here in a good place; and say to the poor, Stand thou there, or sit here under my
footstool:
"4": Are ye not then partial in yourselves, and are become judges of evil thoughts?
"5": Hearken, my beloved brethren, Hath not God chosen the poor of this world rich in faith, and heirs of the kingdom which he hath promised to them that love him?
"6": But ye have despised the poor. Do not rich men oppress you, and draw you before the judgment seats?
"7": Do not they blaspheme that worthy name by the which ye are called?
"8": If ye fulfill the royal law according to the scripture, Thou shalt love thy neighbour as thyself, ye do well:
"9": But if ye have respect to persons, ye commit sin, and are convinced of the law as transgressors.
"10": For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all.
"11": For he that said, Do not commit adultery, said also, Do not kill. Now if thou commit no adultery, yet if thou kill, thou art become a transgressor of the law.
"12": So speak ye, and so do, as they that shall be judged by the law of liberty.
"13": For he shall have judgment without mercy, that hath shewed no mercy; and mercy rejoiceth against judgment.
"14": What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him?
"15": If a brother or sister be naked, and destitute of daily food,
"16": And one of you say unto them, Depart in peace, be ye warmed and filled; notwithstanding ye give them not those things which are needful to the body; what doth it profit?
"17": Even so faith, if it hath not works, is dead, being alone.
"18": Yea, a man may say, Thou hast faith, and I have works: shew me thy faith without thy works, and I will shew thee my faith by my works.
"19": Thou believest that there is one God; thou doest well: the devils also believe, and tremble.
"20": But wilt thou know, O vain man, that faith without works is dead?
"21": Was not Abraham our father justified by works, when he had offered Isaac his son upon the altar?
"22": Seest thou how faith wrought with his works, and by works was faith made perfect?
"23": And the scripture was fulfilled which saith, Abraham believed God, and it was imputed unto him for righteousness: and he was called the Friend of God.
"24": Ye see then how that by works a man is justified, and not by faith only.
"25": Likewise also was not Rahab the harlot justified by works, when she had received the messengers, and had sent them out another way?
"26": For as the body without the spirit is dead, so faith without works is dead also. "
You see then that relationship law NEVER ENDS.
Can't you see the difference between the ceremonial laws which were a shadow of Jesus' atonement for us and the ten commandments which are guidlines about how we treat humans and God?