"We now live in the New Covenant" That much is true. "and we worship the Lord on the Lord’s Day - the first day of the week." You do so of your own volition in violation of Gods law. Your worship displeases God. Isa. 29:13 prophesied of you with "Therefore the Lord said: "These people draw near to Me with their mouths and honor Me with their lips, but their hearts are far from Me. Their worship of Me is but rules taught by men."
Sabbatarians are not Christ believers
Slanderous lie and a false witness.
Nah, the fact is that Sabbatarians were condemned in the New Testament.
Paul tells us that the ceremonial aspect of the old law—the Sabbath day itself—is no longer binding for the Christian faithful: Therefore let no one pass judgment on you in regard to ... a Sabbath day—things which are a mere shadow of what is to come, but the substance belongs to Christ (Col. 2:16-17).
Clearly, the Sabbath is “a mere shadow”—that is, fleeting by nature. And “shadow” (Greek, skian) is the same word used by the inspired author of the letter to the Hebrews for the animal sacrifices of the Old Covenant—also no longer binding on Christians.
For the law, having but a shadow (Greek, skian) of the good things to come, and not the exact image of the objects, is never able by the sacrifices which they offer continually, year after year the same, to perfect those who draw near (10:1).
When Paul teaches that Christians do not have to keep the Sabbath, he speaks of the holy days that were specific to the Jews. He is not saying—and does not say—that we do not have to keep any holy days at all. In context, Paul is dealing with Judaizers, who were telling Gentile Christians they had to be circumcised and keep the Old Covenant law that had passed away, which would include the Sabbath and other holy days, in order to be saved. Some overlook this fact when they use Paul’s epistle to the Romans against the necessity of keeping the Third Commandment.
As for the man who is weak in faith, welcome him, but not for disputes over opinions. One believes he may eat anything, while the weak man eats only vegetables. . . . One man esteems one day as better than another, while another man esteems every day alike. Let every man be fully convinced in his own mind. He who observes the day, observes it in honor of the Lord. He also who eats, eats in honor of the Lord (14:1-6).
There is no longer any such thing as a day that binds Christians in the New Covenant. Jesus is the fulfillment of the Sabbath, not some day we have to go to church.” And they are actually correct, but only partially. Jesus is the fulfillment of the Sabbath rest in the sense that only he can actualize the “rest” the Sabbath symbolized.
In Hebrews 10:1-26, we see movement toward tagging on the Church as fulfillment of all that was merely shadow in the Old Covenant and not just Jesus Christ in the abstract. And this makes sense only when we understand that “the Church” is the body of Christ, or Christ himself extended into the world (cf. Eph. 1:22-23).
For since the law has but a shadow of the good things to come, instead of the true form of those realities, it can never . . . make perfect those who draw near.
Therefore, brethren, since we have confidence to enter the sanctuary by the blood of Jesus, by the new and living way which he opened for us through the curtain, that is, through his flesh, and since we have a great high priest over the house of God, let us draw near with a true heart in the full assurance of faith, with our hearts sprinkled clean from an evil conscience and our bodies washed with pure water . . . not neglecting to meet together, as is the habit of some. . . . For if we sin deliberately after receiving the knowledge of the truth, there no longer remains a sacrifice for sins (Heb. 10:1; 19-22, 25-26).
As Christians, we “enter into the sanctuary” through baptism—bodies washed with pure water—and the Eucharist—his flesh—thus enters the necessity of the Church.
He kept the Sabbath before His resurrection, then He fulfilled it.
From His resurrection onwards, we Christians celebrate the Lord’s Day on the first day of the week.
Sabbatarians are not Christ believers