"7 Remember the Sabbath day, to sanctify it.
8 Six days shalt thou labour/serve, and do all thy work;
9 but the seventh day is a sabbath unto YHWH thy God, in it thou shalt not do any manner of work, thou, nor thy son, nor thy daughter, nor thy man-servant, nor thy maid-servant, nor thy cattle, nor thy stranger that is within thy gates;
10 for in six days YHWH made heaven and earth, the sea, and all that in them is, and rested on the seventh day; wherefore YHWH blessed the Sabbath day, and hallowed it."
There are several aspects of this scripture that could be discussed based on the differences in what is expressed in the Ivrit and what is seen here in the English translation. But today we are only going to deal with the 7th and 9th verses.
The 7th verse clearly instructs the people to "remember" the Sabbath day in order to sanctify it, i.e. to set it apart from the other days. This day is not like the other days in the eyes of The Most High, and we are instructed, therefore, to "remember" it and keep it special.
This means that it is paramount for us to know which day is the Sabbath! This is very clearly expressed in the 9th verse, which states that the "7th day" of the week is the Sabbath. Since these instructions were given to the Children of Israel, how they counted the days of the week would have been the standard that He used.
The fathers used a calendar based on the cycles of the moon, therefore, the length of a "day" was/is different from that of a solar "day". When to celebrate the Sabbath had to be calculated; the day we call the Sabbath in this dispensation probably does not correspond to when it falls according to Ivri standards, just as the Ivri calendar is different from the Gregorian, with this year being 5776 as opposed to 2015.
When are we going to make the adjustment to the Ivri cycle and truly "remember the Sabbath"?
Peace and blesssings to one and all!