Verse 30. - So the people rested. Having found by experience that nothing was to be gained by seeking manna on the sabbath, and received the severe rebuke of verse 28, the people henceforth obeyed the new commandment, and "rested on the sabbath day." Of the nature of the "rest" intended more will be said in the comment on Exodus 20:8-11.
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, Ge 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.
So the people rested on the seventh day. Did not attempt to go out of their tents in quest of manna, as on other days, and observed it as a day of rest from labour, and so they continued to do in successive generations.
CHAPTER 16:31-36