These chapters deal with the discovery and cleansing of leprosy.
Ryrie comments on Leviticus 13:2, "Leprous sore, from a root that means 'to strike,' referring to a scaly condition of skin or of inanimate objects, or to a disease that was sometimes serious, though the word includes modern leprosy (Hansen's disease) in humans. It referred to may other kinds of skin eruptions as well."
The disease pictures sin and its cleansing in Christ.
When leprosy was suspected the proper person to effect diagnosis was the priest. The
medical doctor would do so today. But the faithful minister, teacher or spiritual, leader would
diagnose and restore one of the Lord's people taken by surprise by sin.
Leprosy may be difficult to detect in its small beginning - so it is in yielding to sin.
God does not tempt or effect "a solicitation to evil." (James 1:13 ). The sinner is
drawn away and enticed or "ensnared" by his own sinful passions.
Such a diversion through lustful desires can conceive sin in the heart, and birth sin in
visible action - that, full grown, can bring forth death. Do not play with sin. It not only
destroys a ministry it can bring destruction of the body (1 Corinthians 3:16-17
AMP). Death, which is the exact antithesis of the blessed state alluded to in (James
1:12 ) as "the crown of life."
4.3.1. DISCERNMENT OF LEPROSY BY THE PRIESTS (Leviticus 13:1,2)
Leviticus 13:2 "When a man has on the skin of his body a
swelling, a scab, or a bright spot, and it becomes on the skin of his body like
a leprous sore, then he shall be brought to Aaron the priest or to one of his
sons the priests."
Galatians 6:1 "Brethren, if a man is overtaken in any
trespass, you who are spiritual restore such a one in a spirit of gentleness,
considering yourself lest you also be tempted."
4.3.2. USUALLY, LEPROSY HAS AN INSIGNIFICANT BEGINNING (Leviticus 13:3-37)
Leviticus 13:3 "The priest shall examine the sore on the skin
of the body; and if the hair on the sore has turned white, and the sore
appears to be deeper than the skin of his body, it is a leprous sore. Then the
priest shall examine him, and pronounce him unclean."
James 1:14-15 "But each one is tempted when he is drawn
away by his own desires and enticed. Then, when desire has conceived, it
gives birth to sin; and sin, when it is full-grown, brings forth death."
Tasker, in Tyndale Commentaries
says: "the language is suggestive of a fish swimming in a straight course and
then drawn off towards something that seems attractive, only to discover that
the bait has a deadly hook in it."