Leviticus 13:11

9 When anyone develops a skin disease, he must be brought to the priest.

10 The priest will examine him, and if there is a white swelling on the skin that has turned the hair white, and there is raw flesh in the swelling,

it is a chronic skin disease and the priest must pronounce him unclean. He need not isolate him, for he is unclean.

12 But if the skin disease breaks out all over his skin so that it covers all the skin of the infected person from head to foot, as far as the priest can see,

13 the priest shall examine him, and if the disease has covered his entire body, he is to pronounce the infected person clean. Since it has all turned white, he is clean.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
it is a chronic skin disease and the priest must pronounce him unclean. He need not isolate him, for he is unclean.
KJV
It is an old leprosy in the skin of his flesh, and the priest shall pronounce him unclean, and shall not shut him up: for he is unclean.
WEB
it is a chronic leprosy in the skin of his body, and the priest shall pronounce him unclean. He shall not isolate him, for he is already unclean.
ASV
it is an old leprosy in the skin of his flesh, and the priest shall pronounce him unclean: he shall not shut him up, for he is unclean.
DARBY
it is an old leprosy in the skin of his flesh; and the priest shall pronounce him unclean, and he shall not shut him up, for he is unclean.
BLB
it [is] an old leprosy in the skin of his body, and the priest shall pronounce him unclean. He shall not shut him up, for he [is] unclean.
ÅB
da er det en gammel spedalskhet i huden på hans legeme, og presten skal si ham uren; han skal ikke lukke ham inne, for han er alt uren.
OTB
er det en kronisk spedalskhet på huden, og presten skal erklære dem urene. De trenger ikke å bli isolert, for de er allerede urene.
B1930
da er det en gammel spedalskhet i huden på hans legeme, og presten skal si ham uren; han skal ikke lukke ham inne, for han er alt uren.

Study notes (Tyndale)

Original text and word study