18:1-7 God's care for his people; and the increase of the church. - This chapter is one of the most obscure in Scripture, though more of it probably was understood by those for whose use it was first intended, than by us now. Swift messengers are sent by water to a nation marked by Providence, and measured out, trodden under foot. God's people are trampled on; but whoever thinks to swallow them up, finds they are cast down, yet not deserted, not destroyed. All the dwellers on earth must watch the motions of the Divine Providence, and wait upon the directions of the Divine will. God gives assurance to his prophet, and by him to be given to his people. Zion is his rest for ever, and he will look after it. He will suit to their case the comforts and refreshments he provides for them; they will be acceptable, because seasonable. He will reckon with his and their enemies; and as God's people are protected at all seasons of the year, so their enemies are exposed at all seasons. A tribute of praise should be brought to God from all this. What is offered to God, must be offered in the way he has appointed; and we may expect him to meet us where he records his name. Thus shall the nations of the earth be convinced that Jehovah is the God, and Israel is his people, and shall unite in presenting spiritual sacrifices to his glory. Happy are those who take warning by his judgment on others, and hasten to join him and his people. Whatever land or people may be intended, we are here taught not to think that God takes no care of his church, and has no respect to the affairs of men, because he permits the wicked to triumph for a season. He has wise reasons for so doing, which we cannot now understand, but which will appear at the great day of his coming, when he will bring every work into judgment, and reward every man according to his works.

4. take … rest … consider—I will calmly look on and not interpose, while all seems to promise success to the enemy; when figuratively, "the sun's heat" and "the night dews" ripen their "harvest"; but "before" it reaches its maturity I will destroy it (Isa 18:5; Ec 8:11, 12).

like a clear heat—rather, "at the time of the clear (serene) heat" [Maurer].

upon herbs—answering to "harvest" in the parallel clause. Maurer translates, "in the sunlight" (Job 31:26; 37:21; Hab 3:4).

like … dew—rather, "at the time of the dew cloud." God's "silence" is mistaken by the ungodly for consent; His delay in taking vengeance for forgetfulness (Ps 50:21); so it shall be before the vengeance which in the last day shall usher in the restoration of the Jews (Isa 34:1-8; 57:11, end of the verse, 2Pe 3:3-10).