Judges 6:37 in the King James Version
Behold, I will put a fleece of wool in the floor; and if the dew be on the fleece only, and it be dry upon all the earth beside, then shall I know that thou wilt save Israel by mine hand, as thou hast said.
Context
36 Gideon said to God, “If you will save Israel by my hand, as you have spoken,
37 behold, I will put 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’ll know that you will save Israel by my hand, as you have spoken.”
38 It was so; for he rose up early on the next day, and pressed the fleece together, and wrung the dew out of the fleece, a bowl full of water.