Judges 6:33-40 - The Sign Of The Fleece
33 The Midianites, Amalekites, and the desert tribes assembled, crossed the Jordan River, and camped in Jezreel Valley.
34 The Spirit of Jehovah took control of Gideon. He blew a trumpet to call the men of the clan of Abiezer to follow him. 35 He sent messengers throughout the territory of both parts of Manasseh to call them to follow him. He sent messengers to the tribes of Asher, Zebulun, and Naphtali, and they also came to join him.
36 Gideon said to God: You have said you will rescue Israel using me. 37 Look I will place wool on the threshing floor where we thresh the wheat. If in the morning there is dew only on the wool but not on the ground, I will know that you are going to use me to rescue Israel. 38 That is what happened. When Gideon got up early the next morning, he squeezed the wool and wrung enough dew out of it to fill a bowl with water.
39 Then Gideon said to God: Do not be angry with me. Allow me to speak just once more. Please let me make one more test with the wool. This time let the wool be dry, and the ground wet. 40 That night God did it. The next morning the wool was dry, but the ground was wet with dew.