Leviticus 13:21-46 NKJV
21 But if the priest examines it, and indeed there are no white hairs in it, and it is not deeper than the skin, but has faded, then the priest shall isolate him seven days; 22 and if it should at all spread over the skin, then the priest shall pronounce him unclean. It is a leprous sore. 23 But if the bright spot stays in one place, and has not spread, it is the scar of the boil; and the priest shall pronounce him clean.
24 “Or if the body receives a burn on its skin by fire, and the raw flesh of the burn becomes a bright spot, reddish-white or white, 25 then the priest shall examine it; and indeed if the hair of the bright spot has turned white, and it appears deeper than the skin, it is leprosy broken out in the burn. Therefore the priest shall pronounce him unclean. It is a leprous sore. 26 But if the priest examines it, and indeed there are no white hairs in the bright spot, and it is not deeper than the skin, but has faded, then the priest shall isolate him seven days. 27 And the priest shall examine him on the seventh day. If it has at all spread over the skin, then the priest shall pronounce him unclean. It is a leprous sore. 28 But if the bright spot stays in one place, and has not spread on the skin, but has faded, it is a swelling from the burn. The priest shall pronounce him clean, for it is the scar from the burn.
29 “If a man or woman has a sore on the head or the beard, 30 then the priest shall examine the sore; and indeed if it appears deeper than the skin, and there is in it thin yellow hair, then the priest shall pronounce him unclean. It is a scaly leprosy of the head or beard. 31 But if the priest examines the scaly sore, and indeed it does not appear deeper than the skin, and there is no black hair in it, then the priest shall isolate the one who has the scale seven days. 32 And on the seventh day the priest shall examine the sore; and indeed if the scale has not spread, and there is no yellow hair in it, and the scale does not appear deeper than the skin, 33 he shall shave himself, but the scale he shall not shave. And the priest shall isolate the one who has the scale another seven days. 34 On the seventh day the priest shall examine the scale; and indeed if the scale has not spread over the skin, and does not appear deeper than the skin, then the priest shall pronounce him clean. He shall wash his clothes and be clean. 35 But if the scale should at all spread over the skin after his cleansing, 36 then the priest shall examine him; and indeed if the scale has spread over the skin, the priest need not seek for yellow hair. He is unclean. 37 But if the scale appears to be at a standstill, and there is black hair grown up in it, the scale has healed. He is clean, and the priest shall pronounce him clean.
38 “If a man or a woman has bright spots on the skin of the body, specifically white bright spots, 39 then the priest shall look; and indeed if the bright spots on the skin of the body are dull white, it is a white spot that grows on the skin. He is clean.
40 “As for the man whose hair has fallen from his head, he is bald, but he is clean. 41 He whose hair has fallen from his forehead, he is bald on the forehead, but he is clean. 42 And if there is on the bald head or bald forehead a reddish-white sore, it is leprosy breaking out on his bald head or his bald forehead. 43 Then the priest shall examine it; and indeed if the swelling of the sore is reddish-white on his bald head or on his bald forehead, as the appearance of leprosy on the skin of the body, 44 he is a leprous man. He is unclean. The priest shall surely pronounce him unclean; his sore is on his head.
45 “Now the leper on whom the sore is, his clothes shall be torn and his head bare; and he shall cover his mustache, and cry, ‘Unclean! Unclean!’ 46 He shall be unclean. All the days he has the sore he shall be unclean. He is unclean, and he shall dwell alone; his dwelling shall be outside the camp.
This chapter contains God’s instructions for the diagnosis and treatment of lepers. The skin disease of leprosy was the only disease to which such elaborate instructions were attached, so clearly God had something important to teach the people through these laws.
Leprosy was an infection of the flesh, one that spread, one that stubbornly refused to heal. The priests, as those who were to be most familiar with the instructions of the Law, were the ones in charge of diagnosing this disease, not for the purpose of curing it, nor for the purpose of preventing the spread of it, but for the purpose of guarding the tabernacle and the community from ceremonial uncleanness. So serious was God about preserving the ceremonial cleanness of the community that He ordered the lepers to live outside the camp and shout their uncleanness as a warning to all who passed by.
We miss the point if we view these laws purely, or even principally, as medicinal guidelines for preventing the spread of disease. The truth is, God permitted some people to be infected with leprosy to teach the community a vital lesson about “the flesh,” that is, the sinful, infected, diseased flesh that all men inherit from their parents, going back to sinful Adam and Eve.
Lepers exhibited on the outside the disease that infects all men on the inside, the inborn corruption of our very souls. It’s not only the sinful words we speak or the sinful deeds we do, but also the ugly, raw, diseased state of our natural soul that makes us unclean before our God. It’s the natural lack of true fear, love, and trust in God, and the natural presence of evil desires and hostility toward God that infect us and make us unable to approach God in His holiness.
But as the Lord Jesus displayed many times during His earthly ministry, He came to cleanse the lepers, too. He came to wash sinners clean by His blood, through Holy Baptism, cleansing us not only of the things we’ve done, but of the sinful people we are by nature. Now let us daily drown the Old Man through contrition and repentance and allow the New Man to arise and live forever before God in righteousness and purity. Let us pray: Create in me a clean heart, O God, and renew me with a willing spirit to serve You always. Amen.