Peter Pett's Commentary on the Bible
Leviticus 13:2-8
Dealing With Skin Eruptions (Leviticus 13:2).
“When a man shall have in the skin of his flesh a rising, or a scab, or a bright spot, and it become in the skin of his flesh the plague of a suspicious skin disease, then he shall be brought to Aaron the priest, or to one of his sons the priests, and the priest shall look on the plague in the skin of the flesh, and if the hair in the plague be turned white, and the appearance of the plague be deeper than the skin of his flesh, it is the plague of a suspicious skin disease, and the priest shall look on him, and pronounce him unclean.”
If a man discovers that he has a skin eruption he is required to report it to the priests. This is because it, temporarily at least, makes it dangerous for him to enter the tabernacle court in case he is not a whole person, in case he is ‘unclean'. The priests will then examine it, and if the hair in the eruption or spot has turned white and the eruption or spot appears to be more than skin deep they are to declare it a suspicious skin disease, possibly a type of leprosy.
“And if the bright spot be white in the skin of his flesh, and the appearance of it is not deeper than the skin, and its hair is not turned white, then the priest shall shut up the one who has the plague seven days, and the priest shall look on him on the seventh day, and, behold, if in his eyes the plague be at a standstill, and the plague be not spread in the skin, then the priest shall shut him up seven days more, and the priest shall look on him again the seventh day, and, behold, if the plague be dim, and the plague be not spread in the skin, then the priest shall pronounce him clean. It is a scab: and he shall wash his clothes, and be clean.”
On the other hand if the hair in the plague spot is not white, and the eruption or spot does not appear to go deep they are to put him in quarantine for seven days and then view it again. Then they must re-examine it, and if it has still not changed they must quarantine him for a further seven days, and if after the fourteen days it appears no worse, but rather a little better, he declares it to be only a scab and declares the man clean. All the man has to do then is to wash his clothes and be clean. One reason for this, of course, is in case the scab has affected the clothes while he has been waiting. But the ritual reason would be in order to remove from him the taint of the place where he was in quarantine, and to reveal him as ‘clean'.
“But if the scab spread abroad in the skin, after he has shown himself to the priest for his cleansing, he shall show himself to the priest again, and the priest shall look; and, behold, if the scab be spread in the skin, then the priest shall pronounce him unclean: it is a suspicious skin disease.”
On the other hand, if the scab spreads while he is in quarantine, or even after he has been released, the man must immediately call for the priest, who will re-examine it, and if he sees that it has spread he must declare the man unclean.
The main point of this process as far as the priests were concerned was that it protected the holiness of the Sanctuary, and of Israel, but the second benefit as far as Israel was concerned was that a man with a suspicious skin disease would either be cleared, or would be removed from the camp so as to prevent infection.
Daily we too should bring ourselves for examination before our great High Priest, Jesus Christ. We must ask ourselves, ‘if I come up for examination before Him with Whom we have to do, what is there in me that will reveal me as unwhole, imperfect, unclean, fit only to be cast out of His presence? And if there is present sin which goes deep or is spreading we must bring it to Him for Him to deal with. We must seek for the blood of Jesus Christ, God's Son, to cleanse us from all sin (1 John 1:7). Then we can come for our further examination without fear. The plague will have been stayed and we will have been made clean. It will turn out that our sin, while disfiguring, was but a scab on something quickly healed by the Great Physician and as quickly dealt with. Although in many cases the scab may remain.