It was so; for he rose up early on the next day, and pressed the fleece together, and wrung the dew out of the fleece, a bowl full of water.
Perhaps Gideon used a woolen fleece simply because it was handy. He asked God to cause the dew to settle on the fleece that night but not on the surrounding ground. In the morning he discovered that is what God had done. Gideon may have concluded that he had asked the wrong thing since wool attracts dew. In any case he asked God to let the dew fall on the ground but not on the fleece the next night. God did this too. Thus, this double demonstration, that God was indeed with him, and would grant him victory as He had promised, strengthened Gideon’s faith.