Genesis 4:15

life should be done on the six days of the week, and the words are not merely a permission, but a command; but the seventh day is the Sabbath of rest, an holy convocation; ye shall do no work therein. The Sabbath was to be distinguished not only by the fact that the Jews desisted from work, but chiefly because they assembled for the purposes of worship; it is the Sabbath of the Lord in all your dwellings. By the last expression the convocation of the Sabbath is distinguished from that of all the annual festivals, for the Sabbath was usually celebrated at home, in the country, in town, in village, in hamlet, throughout the land, and wherever the Jews lived, while the great festivals were celebrated chiefly, if not entirely, at the places where the Lord's Sanctuary was erected.