Jer 14:4

“(Verse 4) Because of the desolation of the land (or the works of the land, for they failed), because there was no rain upon the land: the farmers were confused, they covered their heads. Because of the desolation of the land, or rather, because the works of the land have failed, through which we come to know God. And the reason is clear: because, he says, rain has not come upon the earth. For it was commanded to the clouds not to rain down rain upon it. (Isai. V). Also, farmers, of whom one speaks, you are the agriculture of God, you are the building of God. (II Cor. III, 9). And in another place: we are the co-workers of God, they cover their heads, and they are confused, understanding that without the grace and assistance of God, they strive in vain.”