Verse 2
Leprosy
Leprosy speaks of sin as
(1) in the blood; (2) becoming overt in loathsome ways; (3) incurable by human means. The anti-type as applied to the people of God is "sin," demanding self-judgment 1 Corinthians 11:31 and "sins," demanding confession and cleansing. 1 John 1:9.
Verses 3–59
priest
Some have found in the regulations of this chapter concerning an inquest by the priest of a case of leprosy, elaborate provisions for the exercise of discipline in the local church. No little self-righteousness and cruelty have come in thereby. The explicit instructions of the N.T. are the alone and sufficient rule of discipline.