'Wool' in the Bible

Behold, I will put a fleece of wool in the floor; and if the dew be on the fleece only, and it be dry upon all the earth beside, then shall I know that thou wilt save Israel by mine hand, as thou hast said.

And it was so: for he got up early on the morning after, and twisting the wool in his hands, he got a basin full of water from the dew on the wool.

Then Gideon said to God, Do not be moved to wrath against me if I say only this: let me make one more test with the wool; let the wool now be dry, while the earth is covered with dew.

And that night God did so; for the wool was dry, and there was dew on all the earth round it.