Judges 6:36-37

36 And Gideon said unto God, If thou wilt save Israel by mine hand, as thou hast said,
37 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.
The King James Version is in the public domain.