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.

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.

All the days wherein the plague shall be in him he shall be defiled,.... Reckoned an unclean person, and avoided as such:

he is unclean; in a ceremonial sense, and pronounced as such by the priest, and was to be looked upon as such by others during the time of his exclusion and separation, until he was shown to the priest and cleansed, and his offering offered:

he shall dwell alone; in a separate house or apartment, as Uzziah did, Ch2 26:21; none were allowed to come near him, nor he to come near to any; yea, according to Jarchi, other unclean persons might not dwell with him:

without the camp shall his habitation be; without the three camps, as the same Jewish writer interprets it, the camp of God, the camp of the Levites, and the camp of Israel: so Miriam, when she was stricken with leprosy, was shut out of the camp seven days, Num 12:14. This was observed while in the wilderness, but when the Israelites came to inhabit towns and cities, then lepers were excluded from thence; for they defiled, in a ceremonial sense, every person and thing in a house they came into, whether touched by them or not. So Bartenora (b) observes, that if a leprous person goes into any house, all that is in the house is defiled, even what he does not touch; and that if he sits under a tree, and a clean person passes by, the clean person is defiled; and if he comes into a synagogue, they make a separate place for him ten hands high, and four cubits broad, and the leper goes in first, and comes out last. The Persians, according to Herodotus (c), had a custom much like this; he says, that if any of the citizens had a leprosy or a morphew, he might not come into the city, nor be mixed with other Persians (or have any conversation with them), for they say he has them because he has sinned against the sun: and there was with us an ancient writ, called "leproso amovendo" (d), that lay to remove a leper who thrust himself into the company of his neighbours in any parish, either in the church, or at other public meetings, to their annoyance. This law concerning lepers shows that impure and profane sinners are not to be admitted into the church of God; and that such who are in it, who appear to be so, are to be excluded from it, communion is not to be had with them; and that such, unless they are cleansed by the grace of God, and the blood of Christ, shall not inherit the kingdom of heaven; for into that shall nothing enter that defiles, or makes an abomination, or a lie; see Co1 5:7 Rev 21:27.

(b) In Misn. Celim, c. 1. sect. 4. so in Misn. Negaim, c. 13. sect. 7, 11, 12. (c) Clio, sive, l. 1. c. 138. (d) See the Supplement to Chambers's Dictionary, in the word "Leprosy".

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.