Of every clean beast thou shalt take to thee by sevens, the male and his female: and of beasts that [are] not clean by two, the male and his female.
Ver. 2. Of every clean beast thou shalt take by sevens.] Three pair for generation, and a single one for sacrifice, after the flood was past. Gen 8:20 God must have a share; and good reason. But that two only of a sort, of the unclean hurtful creatures were preserved, note his fatherly providence. To this day we see, though sheep and birds be so killed up for man's use, yet there are far more of them, than of other unserviceable or cruel creatures. Besides, the weaker creatures go in herds together, the stronger and more savage go alone. For if they should go in multitudes, no man nor beast could stand before them. This you shall find set down to your hand. Job 37:8 Psa 104:17-30 Ammianus Marcellinus writeth, "that in Chaldea there are a huge number of lions, which were like enough to devour up both men and beasts throughout the country. But withal, he saith, that by reason of the store of water and mud thereof, there breed yearly an innumerable company of gnats, whose property is to flee into the eye of the lion, as being a bright and orient thing, where, biting and stinging the lion, he teareth so fiercely with the claws, that he puts out his own eyes; and by that means many are drowned in the rivers, others starve for want of prey, and many the more easily killed by the inhabitants. Bodin a telleth us, that the wolf never seeth his sire, his dam, nor his young: for that the herd of wolves set upon, and killeth that wolf, which by the smell they perceive to have coupled with the she wolf; which unless they did, what a deal of mischief would be done by them everywhere among cattle!
a Bodin. in Theatro., lib. iii.