Judges 6:39 (KJV)
And Gideon said unto God Let not thine anger be hot 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
And Gideon said unto God Let not thine anger be hot 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