Oh goodness, 34 pages. Can you summarise a little, Waxit?
So some might say, does that refer to the then Israel, or to the "spiritual Israel" meaning all believers now?
You need to look at (if you don't mind the expression) The "heart behind it." Work six days, have a rest and spend time with your family. God knows it's important to have periodic rests. He also knows it's important to keep family structures together (heck, he invented "family") and all hanging out together, eating together, is important for family cohesion and family values (one of which would be respecting the Lord).
Equally, however, there are some that did not "keep the Sabbath" on the "Sabbath day." These would include those working in the temple - all the Levites and other officials. We don't know when their "day of rest" would be; perhaps the day before, though that's off topic here.
Exodus 31: