Judges 6:33-39

33Then all the Midianites and the Amalekites and the children of the east assembled themselves together; and they passed over, and pitched in the valley of Jezreel

34But the spirit of the LORD came upon Gideon; and he blew a trumpet; and Abiezer was gathered together after him.

35And he sent messengers throughout all Manasseh; and they also were gathered together after him: and he sent messengers unto Asher, and unto Zebulun, and unto Naphtali; and they came up to meet them.

36And Gideon said unto God, If thou wilt save Israel by mine hand, as thou hast spoken,

37behold, I will put a fleece of wool on the threshing-floor; if there be dew on the fleece only, and it be dry upon all the ground, then shall I know that thou wilt save Israel by mine hand, as thou hast spoken.

38And it was so: for he rose up early on the morrow, and pressed the fleece together, and wringed the dew out of the fleece, a bowlful of water.

39And Gideon said unto God, Let not thine anger be kindled against me, and I will speak but this once: let me prove, I pray thee, but this once with the fleece; let it now be dry only upon the fleece, and upon all the ground let there be dew.