John Trapp on Job 39:9

Verſe 9.Naricornis. Will the Ʋnicorn be willing to ſerve thee?] The Rhinoceros, ſaith the Vulgar: but that's another kind of beaſt, ſo called from the growing of his horn from his noſe. This is the Monoceros or Ʋnicorn, which cannot be taken alive (interimi poteſt, capi non poteſt) as the Rhinoceros may. A very fierce and ſtrong creature it is, and now adayes very rare, but anciently more common: He hath one horn only (and not many, as R. Levi by a miſtake would infer from Deut. 33.17.) that groweth in the middle of his fore-head; and that he lifted up on high: whence alſo he hath his name in the Hebrew. He is deſcribed in Scripture, 1. By this high lifting up of his horn,Lib. 8. cap. 21. Pſal. 92.10. 2. By his ſtrength, Numb. 23.22. 3. From his untameable fierceneſſe, here. Pliny calleth him a Lic[illegible: 1 letter]rn. Vertomannus ſaith he ſaw two of them. Scaliger ſaith he had ſeen the horn of an Unicorn, a ſpecial Antidote againſt Poyſon.Keckerm. But ſome deny that there is any ſuch creature: becauſe if he had an horn ſo placed, and of ſuch a length as is affirmed, he could not graze: and beſides it appeareth not certainly,Ael. lib. that ever any man ſaw ſuch a creature. Aelian ſaith that there are a ſort of wild-Aſſes in India of the bigneſſe of an horſe, that have one horn in the middeſt of their foreheads in length a cubit and an half: and ſo ſharp, that therewith he pierceth through the hardeſt things. Some conceive that by the beaſt here mentioned is meant the wild-Bull, here oppoſſed to the tame Ox, and elſwhere joyned to Oxen, Deut. 33.17. Iſai. 34.6. Whatever it is, it will not be brought to do man ſervice; though fitted by ſtature and ſtrength to do much; but lives at liberty, and is provided for by God.

Or abide by the crib] Heb. Ly all night there as Oxen do, ready for ſervice next morning? I trow not.