But on the other hand, it is the only one that starts with the word "Remember". As if the world would forget it. I keep remembering something Jesus did say "If ye love Me, keep My Commandments". Do we love God enough to obey Him?
No body changed the Sabbath.
It’s still there as observed by Jews.
It wasn’t given to Gentiles, ever. In fact, since the old Covenant was removed and the new Covenant was established, it’s not used. Or valid.
Jeremiah told everyone it would happen, and the author of Hebrews clearly confirmed that it happened. Along with the Apostles, the Elders of the Church in Jerusalem, etc.
In a nutshell, God changed the Covenant, as He was and is able to.
“this command was never repeated in the NT unlike the other commands”
Maybe because Peter, Paul and the other disciples didn’t think they had to say anything about it, that the Sabbath was understood and kept.