Verse 2. - These are the beasts that ye shall eat. In order that the Israelites might know how to avoid the uncleanness arising from the consumption of unclean flesh, plain rules are given them by which they may distinguish what flesh is clean and what is unclean. The first rule is that anything that dies of itself is unclean, whether it be beast, bird, or fish. The reasons of this are plain: for

(1) the flesh still retains the blood, which no Israelite might eat; and

(2) there is something loathsome in the idea of eating such flesh. Next, as to beasts, a class is marked off as edible by two plainly discernible characteristics, and instances are given to show that where there is any doubt owing to the animals possessing one of the characteristic marks only, the rule is to be construed strictly. As to fish and insects, equally plain rules, one in each case, are laid down; but as birds are not readily distinguished into large classes, the names of those that are unclean are given one by one, the remainder being all of them permissible. Thus the simple Israelite would run no risk of incurring uncleanness by inadvertently eating unclean food, whether of beast, bird, fish, or insect. The object of the regulations being to exclude all meats naturally offensive to the human taste, all carnivorous quadrupeds are shut out by the rule of chewing the cud (verse 3), with the same purpose, birds of prey and birds that eat offal are prohibited (verses 13-19), and scaleless fish on account of their repulsive appearance (verses 9-12), as well as beetles, maggots, and vermin of all sorts. In the case of beasts and fish, the rules laid down to mark off those things that are offensive, being general in their application, are such as to include in the forbidden class some few which do not appear naturally loathsome. This is owing partly to the difficulty of classification, partly to a change of feeling which experience has wrought in the sentiments of mankind with regard to such edibles as swine's flesh and shell-fish.