Judges 6:36-37

36Then Gideon said to God, “If You are going to rescue Israel through me, as You have spoken,

37behold, I will put a fleece of [freshly sheared] wool on the threshing floor. If there is dew only on the fleece, and it is dry on all the ground [around it], then I will know that You will rescue Israel through me, as You have said.”