Leviticus 13:22

19 And in the place of the boil there shall be a white rising, or a bright spot, white, and somewhat reddish, and it be showed to the priest;

20 And if, when the priest seeth it, behold, it [is] in sight lower than the skin, and the hair of it [is] turned white; the priest shall pronounce him unclean: it [is] a plague of leprosy broken out of the boil.

21 But if the priest shall look on it, and behold, [there are] no white hairs in it, and [if] it [is] not lower than the skin, but somewhat dark; then the priest shall shut him up seven days:

22 And if it hath spread much in the skin, then the priest shall pronounce him unclean: it [is] a plague.

23 But if the bright spot shall stay in its place, [and] not spread, it [is] a burning boil; and the priest shall pronounce him clean.

24 Or if there [is any] flesh, in the skin of which [there is] a hot burning, and the live [flesh] that burneth hath a white bright spot, somewhat reddish or white;

25 Then the priest shall look upon it: and behold, [if] the hair in the bright spot [is] turned white, and it [is in] sight deeper than the skin: it [is] a leprosy broken out of the burning: wherefore the priest shall pronounce him unclean: it [is] the plague of leprosy.