I. The prophet directs them to apply to God by prayer for rain in the season thereof. He had promised, in the close of the foregoing chapter, that there should be great plenty of corn and wine, whereas for several years, by reason of unseasonable weather, there had been great scarcity of both; but the earth will not yield its fruits unless the heavens water it, and therefore they must look up to God for the dew of heaven, in order to the fatness and fruitfulness of the earth (v. 1): "Ask you of the Lord rain. Do not pray to the clouds, nor to the stars, for rain, but to the Lord; for he it is that hears the heavens, when they hear the earth," Hos. ii. 21. Seasonable rain is a great mercy, which we must ask of God, rain in the time of the latter rain, when there is most need of it. The former rain fell at the seed-time, in autumn, the latter fell in the spring, between March and May, which brought the corn to an ear and filled it. If either of these rains failed, it was very bad with that land; for from the end of May to September they never had any rain at all. Jerome, who lived in Judea, says that he never saw any rain there in June or July. They are directed to ask for it in the time when it used to come. Note, We must, in our prayers, dutifully attend the course of Providence; we must ask for mercies in their proper time, and not expect that God should go out of his usual way and method for us. But, since sometimes God denied rain in the usual time as a token of his displeasure, they must pray for it then as a token of his favour, and they shall not pray in vain. Ask and it shall be given you. So the Lord shall make bright clouds (which, though they are without rain themselves, are yet presages of rain)—lightnings (so the margin reads it), for he maketh lightnings for the rain. He will give them showers of rain in great abundance, and so give to every one grass in the field; for God is universally good, and makes his rain to fall upon the just and the unjust.