Leprosy was disease of so singular a nature, and to be treated so differently from all others, that we cannot hesitate to conclude, what both Jewish and Christian writers indeed have all agreed in; that it had a reference to somewhat of a spiritual allusion. The priest, and not the physician, was to be consulted upon it. All the laws concerning it, were of a religious kind. Seen therefore with an allusion to the sin of the soul, how apt a representation were all the appointments concerning it, which pointed to the atonement by blood, as the only cure. 1 John 1:7. The case of Miriam is very striking in point. See Numbers 12:10.
Related Commentaries of Deuteronomy 24:8
Deuteronomy 24:8-9
8 Take heed in the plague of leprosy, that thou observe diligently, and do according to all that the priests the Levites shall teach you: as I commanded them, so ye shall observe to do.
9 Remember what the LORD thy God did unto Miriam by the way, after that ye were come forth out of Egypt.