1. As a test of obedience, and to teach the Israelites habits of self-denial, and the government of their appetites.

2. To keep them distinct from other nations, and consequently from their idolatrous usages, by throwing hindrances in the way of their social intercourse; for these distinctions were applicable both to persons and things. The Canaanites not only ate the animals prohibited by Moses, which we usually eat, but others also, among which dogs were one. Besides, many of those declared unclean were sacred among the heathen, and sacrificed to their gods.

3. Because those prohibited were innutritive and unwholesome; as the swine, the flesh of which being strong and difficult to digest, affords a very gross aliment, and produces, especially in hot climates, cutaneous, scrophulous, and scorbutic disorders, as the itch, leprosy, etc.

Levítico 7:37
Esse é o sinal referente ao holocausto, à oblação, ao sacrifício para expiação do pecado, às ofertas de reparação e para tirar a culpa, às ofertas pela ordenação dos sacerdotes e às ofertas de paz e comunhão.

Levítico 14:54
Essa é a lei referente a todo tipo de lepra, de sarna,

Levítico 15:32
Essa é a lei a respeito do homem ficar impuro por causa de corrimento no membro ou de perda de esperma;

Ezequiel 43:12
Esta, pois, é a lei do Templo: toda a área ao redor, sobre o topo do monte, todo o seu contorno será santíssimo. Esta, portanto, é a lei da minha Casa.