The Church is Christ's. Christ is the Lord of the Sabbath. He said so himself. Do you deny it?
Heb 7:12 For the priesthood being changed, there is made of necessity a change also of the law.
But there's no question of changing the law here. The Sabbath Law was part of the old covenant. It never applied to Gentiles, and still doesn't.
You guys are completely illogical. Why do you think you're bound by the Sabbath ("God's law") and not think you're bound by circumcision, kashrut, or the laws against mixing fibers in clothing or cutting your hair? Those are also "God's laws," so why don't you keep them?
Jas 2:10 For whoever shall keep the whole law, and yet offend in one point, he is guilty of all.
Gal 5:3-4 For I testify again to every man that is circumcised, that he is a debtor to do the whole law. Christ is become of no effect unto you, whosoever of you are justified by the law; ye are fallen from grace
Yes or no, and then we can continue.