'Lower' in the Bible

and the priest shall examine it; and behold, if its appearance is lower than the skin, and its hair has turned white, then the priest shall pronounce him unclean. It is the plague of leprosy. It has broken out in the boil.

But if the priest examines it, and behold, there is no white hair in the bright spot, and it isn't lower than the skin, but is faded; then the priest shall isolate him seven days.