The sections on purity and impurity in the book of Leviticus—which make up nearly a quarter of the book—are some of the most difficult for the modern reader of the Bible. The laws are complicated, the terminology obscure, the theological or moral message (if there is one) far from obvious, and some of the details (leprous houses, impure females) seeming logically or morally suspect. Even for the religiously observant Jewish reader, these passages, dealing with areas of halakhah rendered moot until the ultimate restoration of the Temple, may have little resonance.