The commandment to keep the Sabbath day holy is one of 10 commandments. Read up all about what is required to keep the Sabbath. See if you're doing it today (or any day of the week).
Remember the sabbath day, to keep it holy. 9 Six days shalt thou labour, and do all thy work: 10 But the seventh day is the sabbath of the Lord thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that is within thy gates: 11 For in six days the Lord made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the Lord blessed the sabbath day, and hallowed it.
Ex 20:8-11
Ye shall keep the sabbath therefore; for it is holy unto you: every one that defileth it shall surely be put to death: for whosoever doeth any work therein, that soul shall be cut off from among his people. 15 Six days may work be done; but in the seventh is the sabbath of rest, holy to the Lord: whosoever doeth any work in the sabbath day, he shall surely be put to death. 16
Wherefore the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations, for a perpetual covenant. 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.
Ex 31:14-17
It's a perpetual covenant for the children of Israel. It was a physical observance for the physical people of Israel. It is a spiritual fulfillment in Christ to the spiritual Israel. That's why it is perpetual. We're observing it right now as we cease from our own works and enter into the walk of the Spirit.
Seen anyone put to death lately for violating this perpetual covenant? Of course not. Is everyone pretty much violating the physical sabbath in the US? Oh yes. Is anyone being put to death. Not likely.
What difference does it make today for Israel in the Spirit/in Christ to do their physical observance? I would think none.
In fact, if you're physically observing it,you're "alive" when you should be "dead" to the world and all ordinances. You're a new man in Christ and are no longer subject to them. You're whole life is a fulfillment of every requirement of the law.
The physical sabbath is a type and a shadow of our rest in Christ. We can look at the types and shadows of the OT and learn from them. Including putting aside your distractions and focus on the Lord and on communing with Him and His Word. That's a good thing.
It's not about justification. It's for your own good. You will stay much healthier if you rest from your work one day out of seven.
If you get into bondage about "violating the Sabbath" because your place of fellowship insists on physically observing the Sabbath and not keep of it causes you to break the Sabbath, then you're in a yoke of bondage.
You're completely free from every requirement of the Law in Christ. It's not that we're disregarding it.
We're fulfilling the Spirit of that Law by walking in the Spirit, by faith. Entering into the rest of God as we cease from our own works and yield to the life of God within us. We know that we're told not to forsake the gathering of ourselves, but this is not a physical observance of the Sabbath. You could call it a "Sabbath" from the standpoint of grace, but the moment if becomes a requirement then you're no longer resting on the grace of God and you're "working" (on the Sabbath no less!).
It is a "religious" demonic spirit that works its way into denominations and puts a weight on God's people that Jesus died to set us free from.
I don't mean this offensively, but while your denomination is over there physically observing the Sabbath in Jesus' name, my church is over here not even taking thought about it and getting our socks blessed off. I won't judge the Lord's servant if you choose to esteem one day above another, but realize if your physical actions are meant to fulfill a spiritual rest, then you have stopped resting (in this instance) from your labors.
While one denomination won't let their women wear pants or makeup, my church's women wear jeans and makeup and have their hair down, fixed up nicely.
We do service on Sunday, but it might as well be Monday, except that we're all off on Sunday. And we're all getting blessed. We've got keyboards and horns and God ne ver left the building. All the religious spirits afflicting the people of God! It's not good!
Wouldn't you dream of coming over "here" where the freedom and liberty is, where you don't take thought of Sabbaths, or have strict dress codes, or hair requirements, or any other carnal ordinance and just receive the grace of God as a free gift without any other fulfillment other than walking in the love of God?