Judges 6:36-40 - Gideon Tests Yahweh With The Fleece
36 Then Gideon said to God, If you are going to give Israel salvation by my hand, as you have said, 37 See, I will put the wool of a sheep on the grain-floor; if there is dew on the wool only, while all the earth is dry, then I will be certain that it is your purpose to give Israel salvation by my hand as you have said. 38 And it was so: for he got up early on the morning after, and twisting the wool in his hands, he got a basin full of water from the dew on the wool.
39 Then Gideon said to God, Do not be moved to wrath against me if I say only this: let me make one more test with the wool; let the wool now be dry, while the earth is covered with dew. 40 And that night God did so; for the wool was dry, and there was dew on all the earth round it.