'Wool' in the Bible

Come, let's consider your options," says the Lord. "Though your sins have stained you like the color red, you can become white like snow; though they are as easy to see as the color scarlet, you can become white like wool.

For a moth will eat away at them like clothes; a clothes moth will devour them like wool. But the vindication I provide will be permanent; the deliverance I give will last."