John Gill's Exposition of the Whole Bible
Leviticus 13:42
And if there be,.... Or, "but if there be", or, "when there shall be" y, or shall appear to be:
in the bald head, or in the bald forehead, a white reddish sore; white and red mixed, as the Targum of Jonathan, having something of both colours, neither a clear white nor thorough red; though, according to Bochart, it should be rendered "a white sore exceeding bright";
it [is] a leprosy sprung up in his bald head, or in his bald forehead; the signs of which were raw flesh and spreading; so it is said in the Misnah z,
"those two sorts of baldness defile in two weeks, by two signs, by quick raw flesh and by spreading;''
if there was the bright spot and no quick flesh, then he was to be shut up seven days, and looked upon at the end of them; and if there was either quick flesh or a spreading, he was pronounced unclean, but if neither, he was shut up seven days more; and if either of the above signs appeared he was pronounced unclean, if not he was set free.
y וכי "sin autem", V. L. "quum autem", Junius Tremellius, Piscator Drusius. z Ut supra. (Misn. Negaim, c. 10. sect. 10.)