Leviticus 13:21-31

21 But if the priest look, and behold there is no white hair on it, and it be not below the skin of the flesh, and it be dark-coloured; then the priest shall separate him seven days.
22 But if it manifestly spread over the skin, then the priest shall pronounce him unclean: it is a plague of leprosy; it has broken out in the ulcer.
23 But if the bright spot should remain in its place and not spread, it is the scar of the ulcer; and the priest shall pronounce him clean.
24 And if the flesh be in his skin fiery inflammation, and there should be in his skin the part which is healed of the inflammation, bright, clear, and white, suffused with red or very white;
25 then the priest shall look upon him, and, behold, the hair being white is changed to a bright colour, and its appearance is lower than the skin, it is a leprosy; it has broken out in the inflammation, and the priest shall pronounce him unclean: it is a plague of leprosy.
26 But if the priest should look, and, behold, there is not in the bright spot any white hair, and it should not be lower than the skin, and it should be dark, then the priest shall separate him seven days.
27 And the priest shall look upon him on the seventh day; and if the spot be much spread in the skin, then the priest shall pronounce him unclean: it is a plague of leprosy, it has broken out in the ulcer.
28 But if the bright spot remain stationary, and be not spread in the skin, but should be dark, it is a scar of inflammation; and the priest shall pronounce him clean, for it is the mark of the inflammation.
29 And if a man or a woman have in them a plague of leprosy in the head or the beard;
30 then the priest shall look on the plague, and, behold, the appearance of it be beneath the skin, and in it there be thin yellowish hair, then the priest shall pronounce him unclean: it is a scurf, it is a leprosy of the head or a leprosy of the beard.
31 And if the priest should see the plague of the scurf, and, behold, the appearance of it be not beneath the skin, and there is no yellowish hair in it, then the priest shall set apart the plague of the scurf seven days.

Leviticus 13:21-31 Meaning and Commentary

INTRODUCTION TO LEVITICUS 13

In this chapter an account is given of the various sorts of leprosy, and the rules by which they were to be judged of, Le 13:1-3 of the bright spot and scab, Le 13:4-8 of the rising or swelling, Le 13:9-17 of the bile or hot ulcer, Le 13:18-23 of the hot burning or inflammation, Le 13:24-28 of the plague of the scall, Le 13:29-37 of bright spots or blisters, Le 13:38,39 and of shedding the hair, and baldness, Le 13:40-44 of what the leper was to do, and to be done unto, Le 13:45,46 of the leprosy in garments made of linen, woollen, or of skin, Le 13:47-59.

The Brenton translation of the Septuagint is in the public domain.