Judges 6:37-41

behold, I am putting a fleece of wool on the threshing floor. If there is dew on the fleece only, and it is dry on all the ground, then I will know that You will save Israel through me, as You have spoken.”

And it was so. When he got up early the next morning and wrung out the fleece, he wrung the dew from the fleece, a bowl full of water.

Then Gideon said to God, “Do not let Your anger burn against me, so that I may speak only one more time; please let me put You to the test only one more time with the fleece: let it now be dry only on the fleece, and let there be dew on all the ground.”

And God did so that night; for it was dry only on the fleece, and dew was on all the ground.