Only on the Day of Atonement would the High Priest wear the white garments: tunic, belt, turban and pants. These garments are made from white flax; hence their designation "the white garments." This signifies that the High Priest came before God within the Most Holy Place humbly and simply. He did not come in the outward splendor of gold and rich colors, but in pure white. Furthermore, white is the color of forgiveness, and forgiveness is what the High Priest is seeking for himself and all Israel as he came before the Ark.

After the conclusion of the Day of Atonement, he will never again wear the white garments in which he officiated on this day. They are hidden in the place where he removes them, as indicated by Leviticus 16:23.    More about the priestly garments...