'Wool' in the Bible

Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.

For the moth shall eat them up like a garment, and the worm shall eat them like wool: but my righteousness shall be for ever, and my salvation from generation to generation.

Men were cruel to him, but he was gentle and quiet; as a lamb taken to its death, and as a sheep before those who take her wool makes no sound, so he said not a word.