Exodus 16:25 And Moses said, Eat that to day; for to day is a Sabbath unto the Lord: to day ye shall not find it in the field. 26 Six days ye shall gather it; but on the seventh day, which is the Sabbath, in it there shall be none. 27 And it came to pass, that there went out some of the people on the seventh day for to gather, and they found none.
[Patriarchs & Prophets] God has directed that the sick and suffering be cared for; the labor required to make them comfortable is a work of mercy, and no violation of the Sabbath; but all unnecessary work should be avoided. Many carelessly put off till the beginning of the Sabbath little things that might have been done on the day of preparation. This should not be. Work that is neglected until the beginning of the Sabbath should remain undone until it is past. This course might help the memory of these thoughtless ones, and make them careful to do their own work on the six working days.
Every week during their long sojourn in the wilderness the Israelites witnessed a threefold miracle, designed to impress their minds with the sacredness of the Sabbath: a double quantity of manna fell on the sixth day, none on the seventh, and the portion needed for the Sabbath was preserved sweet and pure, when if any were kept over at any other time it became unfit for use.
In the circumstances connected with the giving of the manna, we have conclusive evidence that the Sabbath was not instituted, as many claim, when the law was given at Sinai. Before the Israelites came to Sinai they understood the Sabbath to be obligatory upon them. In being obliged to gather every Friday a double portion of manna in preparation for the Sabbath, when none would fall, the sacred nature of the day of rest was continually impressed upon them. And when some of the people went out on the Sabbath to gather manna, the Lord asked, “How long refuse ye to keep My commandments and My laws?”
Exodus 16:29 See, for that the Lord hath given you the Sabbath, therefore he giveth you on the sixth day the bread of two days; abide ye every man in his place, let no man go out of his place on the seventh day. 30 So the people rested on the seventh day.
May God add His blessing to the study of His word. "Good night" and God bless!