Scab

In the UPDV the word "scab" is one of the diagnostic terms in Leviticus' priestly handbook on skin disease, a defect that disqualifies a man and an animal from offering at the altar, and — in one Isaianic oracle — a judgment Yahweh threatens against the proud women of Jerusalem. The same Hebrew vocabulary that names a benign rash also names a contagious eruption, so the priest's task in Leviticus 13–14 is to tell the two apart, and the same vocabulary turns up later in the curse-list of Deuteronomy 28 and in the Levitical disqualifications for sacrifice.

The Diagnostic Term in Leviticus 13

The first occurrence sets the frame. "When man will have in the skin of his flesh a rising, or a scab, or a bright spot, and it becomes in the skin of his flesh the plague of leprosy, then he will be brought to Aaron the priest, or to one of his sons the priests" (Le 13:2). The scab is one of three presenting signs the priest must evaluate; it is not yet a verdict. On an inconclusive first look the priest "will shut up [him who has] the plague seven days" (Le 13:4), and after the second inspection the chapter distinguishes a self-limiting scab from an advancing one. "The priest will look at him again the seventh day; and see if the plague is dim, and the plague has not spread in the skin, then the priest will pronounce him clean: it is a scab: and he will wash his clothes, and be clean" (Le 13:6). A spreading scab is the warning sign: "if the scab spreads abroad in the skin, after he has shown himself to the priest for his cleansing, he will show himself to the priest again: and the priest will look; and see if the scab has spread in the skin, then the priest will pronounce him unclean: it is leprosy" (Le 13:7-8).

The whole regimen is summarized at the close of the inspection-manual chapters: "This is the law for every manner of plague of leprosy, and for a lesion, and for the leprosy of a garment, and for a house, and for a rising, and for a scab, and for a bright spot; to teach when it is unclean, and when it is clean: this is the law of leprosy" (Le 14:54-57). The triplet "rising ... scab ... bright spot" of Le 13:2 returns verbatim in v.56, so the same diagnostic vocabulary that opens the inspection chapter closes it.

Disqualification from the Altar

The priestly line and the offerings on its altar are governed by the same vocabulary. A man "of the seed of Aaron" who is a leper or has a discharge "will not eat of the holy things, until he is clean" (Le 22:4). Le 21 widens this to physical defects that bar a priest from approaching the altar at all, and "scabbed" is one of them: "or crook-backed, or a dwarf, or who has a blemish in his eye, or is scurvy, or scabbed, or has his stones broken" (Le 21:20). The same disqualification then runs in parallel for the offered animal — "Blind, or broken, or maimed, or having a wen, or scurvy, or scabbed, you⁺ will not offer these to Yahweh, nor make an offering by fire of them on the altar to Yahweh" (Le 22:22). The offerer and the offered share a single standard.

Scab as Covenant Curse

In Deuteronomy's covenant-curse list the scab returns as a divine sanction rather than as a presenting sign. "[The Speech of] Yahweh will strike you with the boil of Egypt, and with the emerods, and with the scurvy, and with the itch, of which you can't be healed" (De 28:27). The verse keeps company with consumption, fever, inflammation, and "every sickness, and every plague, which is not written in the book of this law" (De 28:61), so the same diseases that the priest learned to diagnose in Leviticus are here threatened against an unfaithful Israel without remedy.

The Daughters of Zion

Isaiah picks up the word once, with a deliberate role-reversal. The proud women of Jerusalem, whose anklets, headbands, crescents, and veils he has just inventoried (Is 3:18-23), are warned: "therefore the Lord will strike with a scab the top of the head of the daughters of Zion, and Yahweh will lay bare their secret parts" (Is 3:17). The same diagnostic word that names a treatable rash in Leviticus is here a sign of judgment laid on the head, the seat of the cosmetic ornament the prophet has just listed.

Around the Term

The umbrella sits inside a larger scriptural cluster the UPDV treats together. The diagnosis of Le 13:2 belongs to the same chapter that also handles "rising" and "bright spot" and the eventual verdict of leprosy (Le 13:45-46), and the same priestly inspection is enforced against entire households (Le 14:34-41) and against the camp (Nu 5:2; cf. Nu 12:10). The historical books read like case files of the same legislation in operation — Naaman is a leper "as white as snow" (2Ki 5:1, 27), Uzziah "was a leper to the day of his death, and dwelt in a separate house" (2Ch 26:21, cf. 2Ki 15:5), and Jesus' encounter with the ten lepers, who "stood far off" (Lu 17:12) and were sent to "show yourselves to the priests" (Lu 17:14), still presupposes the Leviticus 13 protocol. For these wider streams see Disease, Sanitation, and Leprosy.