Hey brother, thank you for this keen reply. You have given us much to consider.
I had been thinking lately about the very text you mentioned. And how I might implement the reality of this special day being appointed for our BENEFIT.
The Almighty seems to be very jealous of this day:
13 If thou turn away thy foot from the sabbath, from doing thy pleasure on my holy day; and call the sabbath a delight, the holy of the Lord, honourable; and shalt honour him, not doing thine own ways, nor finding thine own pleasure, nor speaking thine own words:
Then shalt thou delight thyself in the Lord; and I will cause thee to ride upon the high places of the earth, and feed thee with the heritage of Jacob thy father: for the mouth of the Lord hath spoken it.
Growing up, I recall a Seventh Day church allow a First Day church to use its building. The Sunday Church was in the startup mode, I remember. The location was not far from our home.
My parents were from a world where stores were closed on Sunday. We did not watch TV unless it was a "nature" program. But we were OK with it and found much else to do.
Folks can become legalistic about anything. Yet there is something here I feel I might be missing. I like to think that everyday is special in its own way. And every act is to be an act of worship.
Perhaps I need to take this more seriously and learn more about it. And appreciate REST more than I do. And to appreciate the rhythm of life that God has appointed through a once a week "retreat".
We often overlook the other part of the sabbath mandate: Six days you should labor. Today, some will not start. Others will not stop.