Jueces 6:39

39. Dry only upon the fleece This of the two was the more astounding miracle, for that the wool, which so naturally absorbs dew, should be dry, and all the earth around wet with the dews of night, was an all-controlling evidence in this case that God would save Israel by Gideon’s hand.

This sign of the fleece has been thought to have its typical significance. Dew may well represent the grace and blessings of Almighty God. According to Origen, the fleece wet with dew while all around was dry represented the Israelitish people blessed with the Covenants and Law, while all surrounding nations were left without them. The reversed sign, of the fleece dry and dew on all the ground, prefigured the coming time when Israel for unbelief would be rejected, and all the Gentiles receive the dews of heavenly grace. Others have given the signs a slightly different reference. But we may better make the allusion more general, and say that this double miracle symbolizes the course of the Divine Government in the history of nations. That Almighty Power that wrought these miracles will ever, in his government of the world, bestow or withhold his grace according to his infinite wisdom and the deserts of men and nations. If Israel, or any other nation, honour his Name and Law, they shall receive the blessings of his heavenly grace and power; but if they reject him, vengeance is his, and they may not hope to escape the rod of his anger.