New Testament believers worship in Spirit and truth. That's why the idea of a holy day for new testament believers makes no sense. The Sabbath is not God’s seal. You can’t find that anywhere in the New Testament at all.
Colossians 2 16 So let no one judge you in food or in drink, or regarding a festival or a new moon or sabbaths, 17 which are a shadow of things to come, but the substance is of Christ.
These things you mention are not part of the 10 commandments, they are the ceremonial laws. This also does not apply to the unclean and clean meats. this is not part of the 10 commandments.
There were yearly sabbaths which had absolutely nothing to do with the Seventh-day Sabbath of the decalogue. And they were definitely a part of the “ordinance” system which ended at the cross. “Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation” (Leviticus 23:24). Again we read, “Also on the tenth day of this seventh month there shall be a day of atonement ... It shall be unto you a sabbath of rest” (Leviticus 27, 32). As you can clearly see, these annual sabbaths fell on a different day of the week every year, and God specifically explained that they were not to be confused with the weekly Sabbath. “These are the feasts of the Lord, which ye shall proclaim to be holy convocations, to offer an offering made by fire unto the Lord, a burnt offering, and a meat offering, a sacrifice, and drink offerings, everything upon his day: BESIDE THE SABBATHS OF THE LORD” (Leviticus 37, 38).
Now we can understand what Paul was referring to in Colossians when he wrote about meat and drink and sabbath days which are shadows. There were certain prescribed offerings for each of those yearly feast days, and they were shadows pointing to the future sacrifice of Jesus. But the Bible says these were “Beside The Sabbaths Of The Lord,” or the Seventh-day Sabbath.
The weekly Sabbath was instituted by God
before sin came into the world. There could never be types or shadows before sin existed! All the shadows were introduced because of sin and pointed forward to the deliverance from sin through Christ. For example, all the lambs slain represented Jesus, the true LAMB, who would die for the sins of the world. If sin had not entered the world, there would have been no need of a Saviour, and therefore, no lambs or shadows pointing to a Saviour. Now it is fully established which law was blotted out and nailed to the cross. At the moment of Christ’s death, the veil of the temple was ripped from top to bottom by an unseen hand (Matthew 27:51). The most holy place of the sanctuary was exposed where the sprinkled blood recorded all the sins of the people. But no more blood needed to be sprinkled; no more lambs needed to be slain; the true Lamb had come to which all those sacrifices pointed. From henceforth, it would be a denial of the Saviour to bring animals. It would be denying that He was the fulfillment of all the shadows and types. Therefore, it would be “against us” or “contrary to us” to continue observing that mosaic law.
What are the some of the elements of a seal?
God's seal is found in His law. A seal is what makes a document official, and it normally contains three characteristics: Name, Office, and Territory.
The 4th commandment has all the elements of a seal. The fourth commandment is the only one that contains all three elements of a seal:
1) "The Lord"--His name, (2) "made"--His office as Creator, (3) "heaven and earth, the sea, and all that in them is"--His territory.
Ezekiel 20:12
12 Moreover also I gave them my sabbaths, to be a sign between me and them, that they might know that I am the Lord that sanctify them.
Ezekiel 20:20 (KJV 1900)
20 And hallow my sabbaths; and they shall be a sign between me and you, that ye may know that I am the Lord your God.
If the government summons you to court at a certain time, it expects you to be there—not three days earlier or a day after. If it asks you to testify at a trial, it expects you to answer questions and not read a sports magazine. Neither does it want you to show up late or leave early. It also considers you in contempt of court, a lawbreaker, if you ignore the judge while he or she is trying to speak with you.
I have no doubt that most sincere Christians citizens would be angered by such disrespect for the institution for justice, yet these same Christians do not respect God’s government regarding time with Him in His chamber. They don’t show up when asked, and if they do, it’s often on another day and they don’t do the things asked of them.
Many Christians exclude the fourth Commandment from the other nine as a law meant only for the Jews. Others say that it is still a Commandment to obey, but one that Christians should practice on the first day of the week instead of the last day. Others still argue that it doesn’t matter what day, as long as time is given to God. Yet can you ever imagine finding a judge who orders a trial on Wednesday to accept: “I showed up on Thursday! As long as I show up, does it really matter?” Of course, God will accept praise any day and time, and He will bless you for it. But this Commandment asks for your presence at a particular place and time!
Why is it then that when a judge tells us to show up, we know we are breaking the law when we don’t and will suffer the penalty—but if the Judge of the universe asks us to show on a certain day, it’s really just our call? By ignoring or altering the fourth Commandment, it is no longer a relevant part of the 10 Commandments as written in the Bible—the inspired Word of God. Indeed, if it can change on the whims of a person, why not the others? But Jesus Himself emphatically said this would never be the case. “Think not that I come to destroy the law … but to fulfill” (Matthew 5:17,18). He also said not one part of it would change, not even if the earth and its people passed into history. It’s for all time and for all creation! In addition, He said the wording of the law would never change (Luke 16:17), which is what exactly has to happen if we are to accept that the first day is the Sabbath. Can you imagine changing a court summons date and passing it off as lawful?
Many are surprised to hear that neither Jesus nor the New Testament writers ever tell Jewish converts to worship on the first day of the week. You might guess that many Jews would be put off by such a statement—after all, the Commandments are an essential part of their lives (their ancestors were stoned for not following it!) and they had heard with their own ears Jesus tell them to keep the Commandments. Public defenders would be outraged if a judge told them one day to be ready for trial on Thursday, then suddenly moved it to Wednesday to appease the prosecutors without telling the defense! Yet we hear about no such controversy regarding the Sabbath in the Bible.
This becomes even more problematic when Paul puts a stop to the practice of circumcision, replacing the commitment, or altering it, with baptism (Colossians 2:11). His act of transforming the circumcision ceremony created a deep division in the church, yet we are to believe the transformation of the Sabbath did not? Many claim the fact that Jesus doesn’t vocally reinforce the Sabbath in the New Testament proves, from silence, that He must have not considered it important. But since He did observe the Sabbath, and because we see no Jewish outcry, the argument from silence works best the other way around. Indeed, Jesus often mentions a Commandment to add more meaning to it. It isvery possible that the light on the Sabbath in the Bible is sufficient, so He saw no reason to mention it. Of course, Jesus does mention the Sabbath while defending it from legalists (Matthew 12:1–12), and He honored the Sabbath by going to the synagogue, as “was his custom” (Luke 4:16).