Leviticus 13:22-27

²²And if increasing it increaseth in the skin, the priest shall make him to be unclean; it is the plague.

²³But if the spot abideth in its place, and increaseth not, it is a description of an ulcer, and the priest shall make him clean.

²⁴Or, if a man hath in his skin a burning wound, and there be the sign of a glowing wound whitish-red or (altogether) white,

²⁵the priest shall look upon it, and, behold, if the hair be white in the bright spot, and the appearance be deeper than the skin, it is leprosy increasing in the wound, and the priest shall make him unclean; it is the plague of leprosy.

²⁶But if the priest see it, and, behold, the hair is not white in the spot, and it is not deeper than the skin, and is becoming obscure, the priest shall seclude him seven days.

²⁷And the priest shall look upon him on the seventh day; if, increasing, it increaseth in the skin, the priest shall make him to be unclean; it is the plague of leprosy.