Leviticus 1–16 sees the world as divided between the profane (i.e., not holy) masses and the holy priests. Anyone who incurs impurity must be separated from the priests and the Temple until purity is restored through washing, sacrifice, and the passage of time. Leviticus 17–26 is called the Holiness code, from its repeated insistence that Israel should be a holy people; scholars accept it as a discrete collection within the larger Priestly source, and have traced similar holiness writings elsewhere in the Pentateuch.