17:19-27 The prophet was to lay before the rulers and the people of Judah, the command to keep holy the sabbath day. Let them strictly observe the fourth command. If they obeyed this word, their prosperity should be restored. It is a day of rest, and must not be made a day of labour, unless in cases of necessity. Take heed, watch against the profanation of the sabbath. Let not the soul be burdened with the cares of this world on sabbath days. The streams of religion run deep or shallow, according as the banks of the sabbath are kept up or neglected. The degree of strictness with which this ordinance is observed, or the neglect shown towards it, is a good test to find the state of spiritual religion in any land. Let all; by their own example, by attention to their families, strive to check this evil, that national prosperity may be preserved, and, above all, that souls may be saved.
26. plain mountains … south—(Jos 15:1-4). The southern border had extended to the river of Egypt, but was now much curtailed by Egyptian invasions (2Ch 35:20; 36:3, 4). The Hebrew for "south" means dry; the arid desert south of Judea is meant. The enumeration of all the parts of Judea, city, country, plain, hill, and desert, implies that no longer shall there be aught wanting of the integrity of the Jewish land (Zec 7:7).
sacrifices—As in Jer 17:22, one constituent of Judea's prosperity is mentioned, namely, its kings on David's throne, the pledge of God being its guardian; so in this verse another constituent, namely, its priests, a pledge of God being propitious to it (Ps 107:22).