Leviticus 14:57

14:57 to teach when something is unclean and when it is clean. This is the law for dealing with infectious disease.”

Leviticus 10:10

10:10 as well as to distinguish between the holy and the common, and between the unclean and the clean,

Leviticus 11:29

Creatures that Swarm on the Land

11:29 “‘Now this is what is unclean to you among the swarming things that swarm on the land: the rat, the mouse, the large lizard of any kind,

Leviticus 11:47

11:47 to distinguish between the unclean and the clean, between the living creatures that may be eaten and the living creatures that must not be eaten.’”

Leviticus 20:25

20:25 Therefore you must distinguish between the clean animal and the unclean, and between the unclean bird and the clean, and you must not make yourselves detestable by means of an animal or bird or anything that creeps on the ground – creatures I have distinguished for you as unclean.