I didn’t want to thread-jack Eu’s great discussion on “His Laws” – but this is kind of related.
The Sabbath Day is a day of rest. I think it is necessary because it is helpful to us. But defining when to rest or what to rest from seems to require interpretation by mortals and individuals.
I have heard that a great discussion between Jewish Rabbi’s studying the Talmud posed the following question:
If a Jew (who is required to keep the Sabbath Holy) is lost in the desert, and soon looses track of what day it is, how can they still keep the Sabbath Day Holy?
How would you answer that?