Musar su Levitico 13:13

When they see that G–d approves of a person's conduct, even his enemies make peace with him. This is why we find that Samael, the perennial accuser, concurs in blessing Jacob, something described in Talmudic literature as ומלאך רע יענה אמן, "the "evil" angel confirms by saying "Amen" (Shabbat 119); when this occurs, the red string will turn white. [A reference to the killing of the scapegoat on the Day of Atonement and the visible sign that G–d had granted forgiveness to the people. Ed.] An allusion to this is found in the legislation dealing with נגעים, skin diseases, that require quarantine. The Torah in Leviticus 13,13 describes a situation where the entire body is covered with a disease which makes the skin white, as one where the party so afflicted is considered ritually pure, [as distinct from a situation where only part of the body is afflicted]. When a person is so afflicted the Torah describes his skin as כלו הפך לבן. This description, in an allegorical sense, fits Laban the Aramite perfectly. The latter's roots were in the סטרא אחרה, the left side of the emanations. He was thoroughly infected with the serpent's lies. The serpent was the world's first liar, Laban an eager student, the רמאי, swindler. He is spiritually identical with בלעם, whose stock in trade was נחש ינחש, to rely on snake-charming and the like, [in the immediate sense this is a form of sooth saying. Ed.] Chullin 95 stipulates that any נחוש which is not patterned after the נחוש, sign guessing, employed by Eliezer when he wanted to enlist G–d's support in finding a suitable girl for Isaac, is inadmissible, smacks of paganism. Eliezer managed to put Laban's power of employing charms into the service of something approved by G–d. This means that he personally did not employ that method. I shall explain this in due course. This is why he “נתהפך ללבן,” "became totally white," i.e. he remained spiritually pure. Even though Laban was very wicked, he was extremely wise; he realised that Isaac represented the secret of the tree of knowledge, as we have discussed earlier.