Leviticus 13:9

“When the plague of leprosy is in a man, etc.] He has all the signs of it, and it is pretty manifest both to himself and others that it is upon him; then he shall be brought unto the priest; by his friends and neighbours, if he is not willing to come of himself: a sinner insensible of the leprosy of sin, and of his unclean and miserable state through it, has no will to come to Christ the great High Priest for cleansing; but one that is sensible of it, and of Christ’s ability to help and cleanse him, will come freely and gladly, and importunately seek to him for it; though indeed such an one is brought by powerful and efficacious grace to him, yet not against, but with his full will; (see…”

“if the rising be white--This BRIGHT WHITE leprosy is the most malignant and inveterate of all the varieties the disease exhibits, and it was marked by the following distinctive signs: A glossy white and spreading scale, upon an elevated base, the elevation depressed in the middle, but without a change of color; the black hair on the patches participating in the whiteness, and the scaly patches themselves perpetually enlarging their boundary. Several of these characteristics, taken separately, belong to other blemishes of the skin as well; so that none of them was to be taken alone, and it was only when the whole of them concurred that the Jewish priest, in his capacity of physician, was to…”