The words "white as snow" occur in three connections in the Word of God, namely, in association with sin, the Saviour, and salvation.
1. Sin. Leprosy is a pronounced type of sin. There are three persons who were stricken with leprosy, "'white as snow," and these were—Moses, for his hesitation (Exd 4:6); Miriam, for her opposition (Num 12:10); and Gehazi, for his covetousness (2Ki 5:27).
2. Saviour. When Christ was transfigured, His raiment was "exceeding white as snow" (Mar 9:3); and when John saw Him, "His head and His hairs were white like wool, as white as snow" (Rev 1:14). White is here emblematic of Christ's personal holiness and His righteous action.
3. Salvation. "Though your sins be as scarlet, they shall be as white as snow" (Isa 1:18). The one effectual cause that brings about this transformation is the blood of Christ (Rev 7:14).