We learn from these passages that the people were not only prohibited from adultery, but also from all sins. which are repugnant to the modesty of nature itself. In order that all impurity may be the more detestable, He enumerates two species of unnatural lust, from whence it is evident that when men indulge themselves in this respect, they are carried away by an impulse, which is more than beastly, to defile themselves by shameful wickedness. The beasts are satisfied with natural connection; it is therefore a gross enormity that this distinction should be confounded by man endowed with reason; for what is the use of our judgment and intelligent faculties if it be not that greater self-restraint should exist in us than in the brute animals? It is plain, therefore, that they must be blinded in a horrible manner who so shamefully defile themselves, as Paul says. (Romans 1:28.) The madness of lust has, however, invented several monstrous vices, whose names it would be better to bury, if God had not chosen that these shameful monuments should exist, to inspire us with fear and horror. It has at length advanced to such excesses, that men created in God's image, both male and female, have had connection with brutes. Leviticus 18:24. Defile not yourselves in any of these things. An old proverb says, that good laws have sprung from evil habits; and God reminds us that for this reason He has been induced expressly to advert to these disgusting and wicked things; for the monstrosities which He mentions would have been concealed in eternal silence had not necessity compelled Him to bring them to light. But since the Canaanitish nations had advanced to such a pitch of licentiousness, that the prodigious sins, which else would have been better concealed, had been but too familiarly known from their wicked habits, God warns His people to beware of their fatal examples. First, when He says that these abominations prevailed amongst the Gentiles, He indicates that evil habits by no means avail as an excuse; nay, that public consent is in vain alleged in defense of vice. But the better to deter them from imitating them, He sets before their eyes the vengeance He is about to take. It is true, indeed, that the nations of Canaan were destroyed for other reasons, but it is not without cause that He sets forth this amongst the rest, for undoubtedly God was offended by such pollutions.

With mankind - This abominable crime, frequent among the Greeks and Romans as well as the Canaanites, may be punished with death in this country.

Thou shall not lie with mankind as with womankind,.... By carnal knowledge of them, and carnal copulation with them, and mixing bodies in like manner: this is the sin commonly called sodomy, from the inhabitants of Sodom, greatly addicted to it, for which their city was destroyed by fire: those that are guilty of this sin, are, by the apostle, called "abusers of themselves with mankind", 1-Corinthians 6:9,
it is abomination; it is so to God, as the above instance of his vengeance shows, and ought to be abominable to men, as being not only contrary to the law of God, but even contrary to nature itself, and what is never to be observed among brute creatures.