Leviticus 13:8

8 and if the priest recognizes that the scab has spread in the skin, then the priest shall pronounce him unclean: it is leprosy.

Leviticus 13:8 Meaning and Commentary

Leviticus 13:8

And [if] the priest see that, behold, the scab spreadeth in
the skin
Is not at a stay, as when he looked at it a second and third time:

then the priest shall pronounce him unclean;
a leprous person; to be absolutely so, as Jarchi expresses it; and so obliged to the birds (to bring birds for his cleansing), and to shaving, and to the offering spoken of in this section, as the same writer observes:

it [is] a leprosy:
it is a clear and plain case that it was one, and no doubt is to be made of it, it is a spreading leprosy: as sin is; it spreads itself over all the powers and faculties of the soul, and over all the members of the body; and it spreads more and more in every stage of life, unless and until grace puts a stop to it.

Leviticus 13:8 In-Context

6 After this the priest shall look on him again the seventh day and see if the plague has darkened and that the plague is not spread in the skin, then the priest shall pronounce him clean; it is but a scab, and he shall wash his clothes and be clean.

7 But if the scab spreads much abroad in the skin after he has been shown unto the priest for his cleansing, he shall be seen of the priest again;

8 and if the priest recognizes that the scab has spread in the skin, then the priest shall pronounce him unclean: it is leprosy.

9 When the plague of leprosy is in a man, then he shall be brought unto the priest;

10 and the priest shall see him; and if the rising looks white in the skin and it has turned the hair white and there is quick raw flesh in the rising,