1 Ne 12:10 garments are made white in his blood

Bruce R. McConkie

“We clean our garments by washing them in water. Filth, dirt, germs, odors, and whatever is unclean and offensive is thus removed; our wearing apparel becomes clean and spotless. A saved person is one whose soul is clean and spotless, one who is free from the filth and corruption of sin; and the prophetic way of describing such a person is to say that his garments are clean. Since the only way a human soul can be cleansed and perfected is through the atonement of Christ, it follows that the symbolic way of describing this process is to say that such a one has washed his garments in the blood of the Lamb, as we have here learned Nephi and Alma did.” (The Promised Messiah: The First Coming of Christ, p. 251.)