And you think that is incorrect? You actually think that the day of the resurrection of Christ (which only happens to be called "Sunday" but is in fact called "the first day of the week" and "the morrow after the Sabbath") means absolutely nothing? Yes, indeed, the requirements of the 7th day Sabbath were transferred to the first day of the week (and it is there in the NT). and "Sunday" means nothing (other than to Sabbatarians, who have made a big deal out of this).
Seventh Day Adventists have created a false bogeyman about worshipping on Sunday being the same as taking the Mark of the Beast. That is utter nonsense. And that the pope and/or the papacy are "the Antichrist" (which is more nonsense). But those who follow Ellen G. White cannot possibly see how wrong she was (in many areas). So why are SDAs not found in Jewish synagogues on the 7th day of the week?
Where in Scripture was the Sabbath transferred to the first day of the week? I am a 7th Day Baptist. Sunday keeping Christians are following the traditions of men and the Roman Catholic Church. Why are we told to follow the commandments so many times in the NT. Are you saying that they all stayed the same and God changed his mind on one, the 4th Commandment? That is not scripture.
"He that saith, I know him, and keepeth not his Commandments, is a liar and the truth is not in him" (1 John 2:4)
" And in vain they worship Me, teaching as doctrines the commandments of men." (Matt 15:9)
" We ought to obey God rather than man" (Acts 5:29)
" I will put My laws into their hearts, and in their minds, I will write them. " (Hebrews 10:16)
"...to change times and law..." (Daniel 7:25)
"Therefore, the law is holy and the commandment holy and just and good." (Romans 7:12)
"...I have kept My Father's commandments." (John 15:10)
This is all in the NT and there are many, many more. God plainly tells us to keep his commandments and to keep the Sabbath which is part of the Commandments.
It is ridicules to suggest that he changed just one of them.