Judges 6:36-40 - Gideon Tests Yahweh With The Fleece
36 And Gideon said unto God, "If thou wilt save Israel by my hand as thou hast said: 37 Behold, I will put a fleece of wool in the threshing place. And if the dew be on the fleece only, and dry upon all the earth beside: then I shall be sure that thou wilt save Israel by my hand as thou saidest." 38 And it came to pass. And he rose up early on the morrow, and he thrust the fleece together and wrung the dew thereout and filled a bowl of water.
39 And Gideon said unto God, "Be not angry with me, that I speak once more; let me prove only once again with the fleece. Let it be dry only upon the fleece, and dew upon all the ground about." 40 And God did so that same night: so that it was dry upon the fleece only, and on all the ground about, dew.