Calendar Series
This calendar shows that God had a week comprised of seven days, with six days being designated for work and the seventh for rest. For about 40 years the Israelites had a lesson from God on which day to gather bread and which was the Sabbath.
Ex 16:22-30 "And it came to pass, that on the sixth day they gathered twice as much bread, two omers for one man: and all the rulers of the congregation came and told Moses. And he said unto them, This is that which the LORD hath said, To morrow is the rest of the holy sabbath unto the LORD: bake that which ye will bake to day, and seethe that ye will seethe; and that which remaineth over lay up for you to be kept until the morning.And they laid it up till the morning, as Moses bade: and it did not stink, neither was there any worm therein. 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. Six days ye shall gather it; but on the seventh day, which is the sabbath, in it there shall be none. And it came to pass, that there went out some of the people on the seventh day for to gather, and they found none. And the LORD said unto Moses, How long refuse ye to keep my commandments and my laws? 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. So the people rested on the seventh day. God saw those who went out to find bread on the Sabbath and asked, "How long refuse ye to keep my commandments".
The above passage provides evidence of the first six days of the week being for work, followed by the seventh-day Sabbath. It also provides evidence that the seventh-day Sabbath was observed before the 10 commandments were pronounced on Mt. Sinai.
In the next "Calendar of Evidence" God speaks and writes about the seventh-day when providing the 10 Commandments to the Israelites.