It takes away the fear some have of accepting that they do not need to hold the Sabbath day holy. We do not need to fear that because Christ is our Sabbath.
But that is simply not Biblical Rockie. You will never see where Christ claimed He was the Sabbath day, and none of the NT writers ever said it either.
Its almost akin to saying that Christ is our honoring of our mother and father. Or Christ is our non murdering. Or that Christ is the Father?
How can He be one of the commands, but not all of them? That is 'changing' the original command, something that Christ Himself warned not to do.
Mat 5:19 Therefore whoever relaxes one of the least of these commandments and teaches others to do the same will be called least in the kingdom of heaven, but whoever does them and teaches them will be called great in the kingdom of heaven.
Relaxes - lyō
1) to loose any person (or thing) tied or fastened
a) bandages of the feet, the shoes,
b) of a husband and wife joined together by the bond of matrimony
c) of a single man, whether he has already had a wife or has not yet married
2) to loose one bound, i.e. to unbind, release from bonds, set free
a) of one bound up (swathed in bandages)
b) bound with chains (a prisoner), discharge from prison, let go
3) to loosen, undo, dissolve, anything bound, tied, or compacted together
a) an assembly, i.e. to dismiss, break up
b) laws, as having a binding force, are likened to bonds
c) to annul, subvert
d) to do away with, to deprive of authority, whether by precept or act
e) to declare unlawful
f) to loose what is compacted or built together, to break up, demolish, destroy
g) to dissolve something coherent into parts, to destroy
h) metaph., to overthrow, to do away with