And God did so that night: for it was dry upon the fleece only, and there was dew on all the ground.
All Commentaries on Judges 6:40 Go To Judges 6
Augustine of Hippo
AD 430
Again on this subject it is written: “For through the law comes the knowledge of sin. But now, apart from the law, the justice of God is made manifest, being witnessed by the law and the prophets.” When he says “made manifest” he shows that it had existed but was like the dew for which Gideon asked; then it was not visible on the fleece, but now it is made manifest on the ground around. Therefore, since law without grace could only strengthen rather than kill sin—as it is written: “The sting of death is sin and the strength of sin is the law”—and as many flee to grace for refuge from the face of sin which had been so enthroned, to grace lying manifest, as it were, on the ground, so at that time few fled to it [grace] for refuge, invisible as it were, on the fleece. Indeed, this division of times belongs to the depth of the riches of the wisdom and of the knowledge of God, of which it is said: “How incomprehensible are his judgments and how unsearchable his ways!”