en_tn/lev/13/34.md

General Information:

Yahweh continues telling Moses and Aaron what the people must do when someone has a skin disease."

the disease

Here "the disease" refers to the disease on the person's head or chin.

the priest must pronounce him clean ... he will be clean

The man whom other people may touch is spoken of as if he were physically clean. (See: rc://en/ta/man/jit/figs-metaphor)