22 And so it was, on the sixth day, that they gathered twice as much bread, two omers for each one. And all the rulers of the congregation came and told Moses. 23 Then he said to them, "This is what the Lord has said: 'Tomorrow is a Sabbath rest, a holy Sabbath to the Lord. Bake what you will bake today, and boil what you will boil; and lay up for yourselves all that remains, to be kept until morning.' " 24 So they laid it up till morning, as Moses commanded; and it did not stink, nor were there any worms in it. 25 Then Moses said, "Eat that today, for today is a Sabbath to the Lord; today you will not find it in the field. 26 Six days you shall gather it, but on the seventh day, which is the Sabbath, there will be none." 27 Now it happened that some of the people went out on the seventh day to gather, but they found none. 28 And the Lord said to Moses, "How long do you refuse to keep My commandments and My laws? 29 See! For the Lord has given you the Sabbath; therefore He gives you on the sixth day bread for two days. Let every man remain in his place; let no man go out of his place on the seventh day." 30 So the people rested on the seventh day. 31 And the house of Israel called its name Manna. And it was like white coriander seed, and the taste of it was like wafers made with honey.
Matthew Henry's Commentary on Exodus 16:22-31
Commentary on Exodus 16:22-31
(Read Exodus 16:22-31)
Here is mention of a seventh-day sabbath. It was known, not only before the giving of the law upon mount Sinai, but before the bringing of Israel out of Egypt, even from the beginning, Genesis 2:3. The setting apart one day in seven for holy work, and, in order to that, for holy rest, was ever since God created man upon the earth, and is the most ancient of the Divine laws. Appointing them to rest on the seventh day, he took care that they should be no losers by it; and none ever will be losers by serving God. On that day they were to fetch in enough for two days, and to make it ready. This directs us to contrive family affairs, so that they may hinder us as little as possible in the work of the sabbath. Works of necessity are to be done on that day; but it is desirable to have as little as may be to do, that we may apply ourselves the more closely to prepare for the life that is to come. When they kept manna against a command, it stank; when they kept it by a command, it was sweet and good; every thing is sanctified by the word of God and prayer. On the seventh day God did not send the manna, therefore they must not expect it, nor go out to gather. This showed that it was produced by miracle.