Now that Aaron was consecrated a high priest over the house of God, God spoke to him with Moses, and appointed them both as joint-commissioners to deliver his will to the people. He spoke both to Moses and to Aaron about this matter; for it was particularly required of the priests that they should put a difference between clean and unclean, and teach the people to do so. After the flood, when God entered into covenant with Noah and his sons, he allowed them to eat flesh (Gen. 9:13), whereas before they were confined to the productions of the earth. But the liberty allowed to the sons of Noah is here limited to the sons of Israel. They might eat flesh, but not all kinds of flesh; some they must look upon as unclean and forbidden to them, others as clean and allowed them. The law in this matter is both very particular and very strict. But what reason can be given for this law? Why may not God’s people have as free a use of all the creatures as other people? 1. It is reason enough that God would have it so: his will, as it is law sufficient, so it is reason sufficient; for his will is his wisdom. He saw good thus to try and exercise the obedience of his people, not only in the solemnities of his altar, but in matters of daily occurrence at their own table, that they might remember they were under authority. Thus God had tried the obedience of man in innocency, by forbidding him to eat of one particular tree. 2. Most of the meats forbidden as unclean are such as were really unwholesome, and not fit to be eaten; and those of them that we think wholesome enough, and use accordingly, as the rabbit, the hare, and the swine, perhaps in those countries, and to their bodies, might be hurtful. And then God in this law did by them but as a wise and loving father does by his children, whom he restrains from eating that which he knows will make them sick. Note, The Lord is for the body, and it is not only folly, but sin against God, to prejudice our health for the pleasing of our appetite. 3. God would thus teach his people to distinguish themselves from other people, not only in their religious worship, but in the common actions of life. Thus he would show them that they must not be numbered among the nations. It should seem there had been, before this, some difference between the Hebrews and other nations in their food, kept up by tradition; for the Egyptians and they would not eat together, Gen. 43:32. And even before the flood there was a distinction of beasts into clean and not clean (Gen. 7:2), which distinction was quite lost, with many other instances of religion, among the Gentiles. But by this law it is reduced to a certainty, and ordered to be kept up among the Jews, that thus, by having a diet peculiar to themselves, they might be kept from familiar conversation with their idolatrous neighbours, and might typify God’s spiritual Israel, who not in these little things, but in the temper of their spirits, and the course of their lives, should be governed by a sober singularity, and not be conformed to this world. The learned observe further, That most of the creatures which by this law were to be abominated as unclean were such as were had in high veneration among the heathen, not so much for food as for divination and sacrifice to their gods; and therefore those are here mentioned as unclean, and an abomination, which yet they would not be in any temptation to eat, that they might keep up a religious loathing of that for which the Gentiles had a superstitious value. The swine, with the later Gentiles, was sacred to Venus, the owl to Minerva, the eagle to Jupiter, the dog to Hecate, etc., and all these are here made unclean. As to the beasts, there is a general rule laid down, that those which both part the hoof and chew the cud were clean, and those only: these are particularly mentioned in the repetition of this law (Deut. 14:4, 5), where it appears that the Israelites had variety enough allowed them, and needed not to complain of the confinement they were under. Those beasts that did not both chew the cud and divide the hoof were unclean, by which rule the flesh of swine, and of hares, and of rabbits, was prohibited to them, though commonly used among us. Therefore, particularly at the eating of any of these, we should give thanks for the liberty granted us in this matter by the gospel, which teaches us that every creature of God is good, and we are to call nothing common or unclean. Some observe a significancy in the rule here laid down for them to distinguish by, or at least think it may be alluded to. Meditation, and other acts of devotion done by the hidden man of the heart, may be signified by the chewing of the cud, digesting our spiritual food; justice and charity towards men, and the acts of a good conversation, may be signified by the dividing of the hoof. Now either of these without the other will not serve to recommend us to God, but both must go together, good affections in the heart and good works in the life: if either be wanting, we are not clean, surely we are not clean. Of all the creatures here forbidden as unclean, none has been more dreaded and detested by the pious Jews than swine’s flesh. Many were put to death by Antiochus because they would not eat it. This, probably, they were most in danger of being tempted to, and therefore possessed themselves and their children with a particular antipathy to it, calling it not by its proper name, but a strange thing. It should seem the Gentiles used it superstitiously (Isa. 65:4), they eat swine’s flesh; and therefore God forbids all use of it to his people, lest they should learn of their neighbours to make that ill use of it. Some suggest that the prohibition of these beasts as unclean was intended to be a caution to the people against the bad qualities of these creatures. We must not be filthy nor wallow in the mire as swine, nor be timorous and faint-hearted as hares, nor dwell in the earth as rabbits; let not man that is in honour make himself like these beasts that perish. The law forbade, not only the eating of them, but the very touching of them; for those that would be kept from any sin must be careful to avoid all temptations to it, and every thing that looks towards it or leads to it.