Êxodo 4:6

6 E o Senhor continuou: - Ponha, agora, a mão no peito. Ele o fez; e, tirando a mão do peito, eis que ela estava leprosa, branca como a neve.

6 Then the Lord said, "Put your hand inside your cloak." So Moses put his hand into his cloak, and when he took it out, the skin was leprous The Hebrew word for [leprous] was used for various diseases affecting the skin. - it had become as white as snow.