Leviticus 13:5-14

⁵and the priest shall look on the spot the seventh day; and, behold, if the spot remains before him, if the spot has not spread in the skin, then the priest shall separate him the second time seven days.

⁶And the priest shall look upon him the second time on the seventh day; and, behold, if the spot be dark, and the spot have not spread in the skin, then the priest shall pronounce him clean; for it is a mere mark, and the man shall wash his garments and be clean.

⁷But if the bright spot should have changed and spread in the skin, after the priest has seen him for the purpose of purifying him, then shall he appear the second time to the priest,

⁸and the priest shall look upon him; and, behold, if the mark have spread in the skin, then the priest shall pronounce him unclean: it is a leprosy.

⁹And if a man have a plague of leprosy, then he shall come to the priest;

¹⁰and the priest shall look, and, behold, if it is a white spot in the skin, and it has changed the hair to white, and there be some of the sound part of the quick flesh in the sore—

¹¹it is a leprosy waxing old in the skin of the flesh; and the priest shall pronounce him unclean, and shall separate him, because he is unclean.

¹²And if the leprosy should have come out very evidently in the skin, and the leprosy should cover all the skin of the patient from the head to the feet, wheresoever the priest shall look;

¹³then the priest shall look, and, behold, the leprosy has covered all the skin of the flesh; and the priest shall pronounce him clean of the plague, because it has changed all to white, it is clean.

¹⁴But on whatsoever day the quick flesh shall appear on him, he shall be pronounced unclean.