Leviticus 13:42

A reddish-white sore may have shown signs of pus (a thick fluid from infection) and swelling.

a skin disease: The Hebrew word tsaraʿat refers to more than Hansen’s disease (leprosy), which is rare and severely disfiguring. In Leviticus, the word describes many different conditions. These include:

• an open sore (13:10),

• a boil (13:18),

• a burn (13:24),

• a sore on the head or chin (13:29),

• shiny white patches (13:38), or

• unusual baldness (13:40).

A key test was whether the condition spread to other parts of the body (13:5–8). If it did, they quarantined the person while the disorder lasted (13:46). Not only people, but also clothing and even buildings could become infected (13:47–59; 14:33–53).

bald . . . forehead bald--The falling off of the hair, when the baldness commences in the back part of the head, is another symptom which creates a suspicion of leprosy. But it was not of itself a decisive sign unless taken in connection with other tokens, such as a "sore of a reddish white color" [Lev 13:43]. The Hebrews as well as other Orientals were accustomed to distinguish between the forehead baldness, which might be natural, and that baldness which might be the consequence of disease.

We have here,
I. Provisos that neither a freckled skin nor a bald head should be mistaken for a leprosy, Lev 13:38-41. Every deformity must not forthwith be made a ceremonial defilement. Elisha was jeered for his bald head (Kg2 2:23); but it was the children of Bethel, that knew not the judgments of their God, who turned it to his reproach.
II. A particular brand set upon the leprosy if at any time it did appear in a bald head: The plague is in his head, he is utterly unclean, Lev 13:44. If the leprosy of sin have seized the head, if the judgment be corrupted, and wicked principles which countenance and support wicked practices, be embraced, it is an utter uncleanness, from which few are ever cleansed. Soundness in the faith keeps the leprosy from the head, and saves conscience from being shipwrecked.
III. Directions what must be done with the convicted leper. When the priest, upon mature deliberation, had solemnly pronounced him unclean,
1. He must pronounce himself so, Lev 13:45. He must put himself into the posture of a mourner and cry, Unclean, unclean. The leprosy was not itself a sin, but it was a sad token of God's displeasure and a sore affliction to him that was under it. It was a reproach to his name, put a full stop to his business in the world, cut him off from conversation with his friends and relations, condemned him to banishment till he was cleansed, shut him out from the sanctuary, and was, in effect, the ruin of all the comfort he could have in this world. Heman, it would seem, either was a leper or alludes to the melancholy condition of a leper, Psa 88:8, etc. He must therefore, (1.) Humble himself under the mighty hand of God, not insisting upon his cleanness when the priest had pronounced him unclean, but justifying God and accepting the punishment of his iniquity. He must signify this by rending his clothes, uncovering his head, and covering his upper lip, all tokens of shame and confusion of face, and very significant of that self-loathing and self-abasement which should fill the hearts of penitents, the language of which is self-judging. Thus must we take to ourselves the shame that belongs to us, and with broken hearts call ourselves by our own name, Unclean, unclean - heart unclean, life unclean, unclean by original corruption, unclean by actual transgression - unclean, and therefore worthy to be for ever excluded from communion with God, and all hope of happiness in him. We are all as an unclean thing (Isa 64:6) - unclean, and therefore undone, if infinite mercy do not interpose. (2.) He must give warning to others to take heed of coming near him. Wherever he went, he must cry to those he saw at a distance, "I am unclean, unclean, take heed of touching me." Not that the leprosy was catching, but by the touch of a leper ceremonial uncleanness was contracted. Every one therefore was concerned to avoid it; and the leper himself must give notice of the danger. And this was all that the law could do, in that it was weak through the flesh; it taught the leper to cry, Unclean, unclean, but the gospel has put another cry into the lepers' mouths, Luk 17:12, Luk 17:13, where we find ten lepers crying with a loud voice, Jesus, Master, have mercy on us. The law only shows us our disease; the gospel shows us our help in Christ.
2. He must then be shut out of the camp, and afterwards, when they came to Canaan, out of the city, town, or village, where he lived, and dwell alone (Lev 13:46), associating with none but those that were lepers like himself. When king Uzziah became a leper, he was banished from his palace, and dwelt in a separate house, Ch2 26:21. And see Kg2 7:3. This typified the purity which ought to be preserved in the gospel church, by the solemn and authoritative exclusion of scandalous sinners, that hate to be reformed, from the communion of the faithful. Put away from among yourselves that wicked person, Co1 5:13.

If a man or woman. What is here spoken of is not the baldness which so often occurs in old age; but that loss of hair, which is the consequence of leprosy, is distinguished from any other, the cause of which may be some indisposition, and which yet does not pollute a man. But, inasmuch as some kinds of baldness do not so greatly differ at first sight from leprosy, -- such, for instance, as ophiasis and alopecia [8] -- it is therefore necessary to distinguish them.

The scall shall he not shave - Lest the place should be irritated and inflamed, and assume in consequence other appearances besides those of a leprous infection; in which case the priest might not be able to form an accurate judgment.

And if there be,.... Or, "but if there be", or, "when there shall be" (y), or shall appear to be:

in the bald head, or in the bald forehead, a white reddish sore; white and red mixed, as the Targum of Jonathan, having something of both colours, neither a clear white nor thorough red; though, according to Bochart, it should be rendered "a white sore exceeding bright"; See Gill on Leviticus 13:19,

it is a leprosy sprung up in his bald head, or in his bald forehead; the signs of which were raw flesh and spreading; so it is said in the Misnah (z),"those two sorts of baldness defile in two weeks, by two signs, by quick raw flesh and by spreading;''if there was the bright spot and no quick flesh, then he was to be shut up seven days, and looked upon at the end of them; and if there was either quick flesh or a spreading, he was pronounced unclean, but if neither, he was shut up seven days more; and if either of the above signs appeared he was pronounced unclean, if not he was set free.

(y) "sin autem", V. L. "quum autem", Junius & Tremellius, Piscator Drusius. (z) Ut supra. (Misn. Negaim, c. 10. sect. 10.)

It is a sign that such baldness came not from age or any accident, but from the leprosy.

But if a white reddish mole was formed upon the bald place before or behind, it was leprosy breaking out upon it, and was to be recognised by the fact that the rising of the mole had the appearance of leprosy on the skin of the body. In that case the person was unclean, and to be pronounced so by the priest. "On his head is his plague of leprosy," i.e., he has it in his head.