John Gill Bible Commentary

And if a leprosy break out abroad in the skin,.... Or, if flowering it flowers (m); the man that has it on him looks like a plant or tree covered with white flowers, being spread all over him in white swellings, bright spots or scabs, as it follows: and the leprosy cover all the skin of him that hath the plague, from his head even to his foot; such an one as the leper was that came to Christ for healing, said to be full of leprosy, Luk 5:12; and such in a mystical sense is every sinner, whether sensible of it or not, even from the Crown of the head to the sole of the foot, full of the wounds, bruises, and putrefying sores of sin, Isa 1:6, wheresoever the priest looketh; that is, he cannot look any where upon any part of him but he sees the signs of the leprosy on him; and from whence the Jewish writers gather, that a priest that inspects leprous persons ought to have a clear sight, and to have both his eyes, and that the inspection should not be made in a dark house. (m) , Sept. "florendo floruerit", Montanus; so Drusius & Tigurine version.