So, if the Lord does not change, then how can mainstream Christianity say that one of his commandments is no longer valid. They profess to believe in the Ten Commandments, but completely skip over one of them and annul it in their words and deeds. Even those who claim the Sabbath was changed to Sunday (hmmm…and God doesn’t change), don’t keep Sunday as a legitimate Sabbath. The following passage makes it abundantly clear that the Sabbath is a serious matter to YHWH and that it is forever.
Adonai said to Moshe, “Tell the people of Isra’el, ‘You are to observe my Shabbats; for this is a sign between me and you through all your generations; so that you will know that I am Adonai, who sets you apart for me. Therefore you are to keep my Shabbat, because it is set apart for you. Everyone who treats it as ordinary must be put to death; for whoever does any work on it is to be cut off from his people. On six days work will get done; but the seventh day is Shabbat, for complete rest, set apart for Adonai. Whoever does any work on the day of Shabbat must be put to death. The people of Isra’el are to keep the Shabbat, to observe Shabbat through all their generations as a perpetual covenant. It is a sign between me and the people of Isra’el forever; for in six days Adonai made heaven and earth, but on the seventh day he stopped working and rested.’” ~~ Exodus 31:12-17