Leviticus 13:43

(43) Then the priest shall look.—It is then the duty of the priest to ascertain whether the white-reddish rising in the bald backhead or bald forehead is in appearance like the leprosy in the skin of the flesh described in Lev_13:2, excepting, of course, the white hair, which in this case could not exist.

As the leprosy appeareth in the skin of the flesh.—Better, in appearance like the leprosy in the skin of the flesh. Though the reddish-white eruption is the only symptom mentioned whereby head-leprosy is to be recognised, and nothing is said about remanding the patient if the distemper should appear doubtful, as in the other cases of leprosy, yet because it is here said “in appearance like the leprosy in the skin of the flesh,” the administrators of the law during the second Temple inferred that all the criteria specified in one are implied in the other. They interpret this phrase, “they are, and therefore must be treated like, leprosy in the skin of the flesh.” Hence they submit that there are two symptoms which render baldness in the front or at the back of the head unclean: viz., (1) live or sound flesh; and (2) spreading. “If live or sound flesh is found in the bright spot on the baldness at the back or in the front of the head, he is pronounced unclean; if there is no live flesh, he is shut up, and examined at the end of the week, and if live flesh has developed itself, and it has spread, he is declared unclean, and if not, he is shut up for another week. If it spreads during this time, or engenders live flesh, he is declared unclean, and if not, he is declared clean. He is also pronounced unclean if it spreads or engenders sound flesh after he has been declared clean.” Of course, the fact that the distemper in this instance develops itself on baldness precludes white hair being among the criteria indicating uncleanness.

A Bible Commentary for English Readers, edited by Charles John Ellicott (1878–1897) — public domain. Text from a community e-Sword module.

43. as the appearance of leprosy] The criterion of white hair is absent, but the other tests of leprosy already mentioned are sufficient to determine whether the outbreak is leprous. According to tradition, two periods of seclusion were necessary as in Lev_13:2-6 and in Lev_13:29-37.

The Cambridge Bible for Schools and Colleges (gen. ed. J. J. S. Perowne; Cambridge University Press, 1878–1918) — public domain. Text from a community e-Sword module.

And the leper in whom the plague is,.... Meaning not he only that has the plague of leprosy in his head, but every sort of leper before mentioned in this chapter:

his clothes shall be rent; not that he might the more easily put on his clothes without hurting him, as some have thought; or that the corrupt humours might evaporate more freely, for evaporation would rather be hindered than promoted by being exposed to cold; nor that he might be known and better avoided, for his cry after mentioned was sufficient for that; but as a token of mourning: and so Aben Ezra having mentioned the former reason, that he might be known by going in a different habit, adds, or the sense is, as a token of mourning; for he was to mourn for the wickedness of his actions; for, for his works came this plague of leprosy upon him; and so the Jews in common understand it, not as a disease arising from natural causes, but as a punishment inflicted by God for sin; wherefore this rite of rending the garments was an emblem of contrition of heart, and of sorrow and humiliation for sin, see Joe 1:13,

and his head bare; or "free" from cutting or shaving, but shall let his hair grow; and so the Targum of Jonathan and Jarchi interpret it; or free from any covering upon it, hat, or cap, or turban: Ben Gersom observes, that the making bare the head, or freeing it, is taken different ways; sometimes it is used of not shaving the head for thirty days, and sometimes for the removal of the vail, or covering of the head it has been used to; but in this place it cannot signify the nourishing of the hair, but that his head ought to be covered: and so Maimonides (a) observes, that a leper should cover his head all the days he is excluded, and this was a token of mourning also; see Sa2 15:30,

and he shall put a covering upon his upper lip; as a mourner, see Eze 24:17. Jarchi interprets it of both lips, upper and under, which were covered with a linen cloth or vail thrown over the shoulder, and with which the mouth was covered; and this was done, as Aben Ezra says, that the leper might not hurt any with the breath of his mouth:

and shall cry, Unclean, unclean; as he passed along in any public place, that everyone might avoid him, and not be polluted by him: the Targum of Jonathan is,"a herald shall proclaim and say, Depart, depart from the unclean.''So every sinner sensible of the leprosy of sin in his nature, and which appears in his actions, should freely confess and acknowledge his uncleanness, original and actual, the impurity of his heart and life, and even of his own righteousness in the sight of God, and have recourse to Christ, and to his blood, for the cleansing him from it.

(a) Hilchot Tumaat Tzarat, c. 10. sect. 6.

John Gill's Exposition of the Whole Bible (1746–1763) — public domain (CC PDM 1.0). Text via the HelloAO Bible API.

כמראה צרעת עור בשר AS THE COLOUR OF LEPROSY IN THE SKIN OF THE FLESH — it is like the colour of the leprosy which is mentioned in the section dealing with the plague on the skin of the flesh (v. 2): “When a man hath in the skin of his flesh …”.What is stated about that? That it makes one unclean by reason of four shades of white, and that it is subject to the law of quarantine during two weeks. And it is not to be treated like the colour of the leprosy mentioned in the case of the boil (v 18) or burn (v. 24) which though also unclean by reason of four shades of white are, however, subject to the law of quarantine for one week only, (i. e if at the end of the week there is neither white hair, nor has it spread the priest at once declares him clean); nor must it be treated as the colour of נתקין on a spot where hair grows — which do not make a person unclean by cause of four colours: a שאת and its subspecies, and that of a בהרת and its subspecies.

Rashi on the Tanakh — English translations: “The Judaica Press complete Tanach with Rashi, translated by A. J. Rosenberg” (CC BY 4.0); “Pentateuch with Rashi's commentary by M. Rosenbaum and A.M. Silbermann, 1929-1934” (public domain); “The Metsudah Tanach series, Lakewood, N.J” (CC BY 4.0); and “The Book of Joshua, Metsudah Publications, 1997” (CC BY 4.0). Text via Sefaria.