Proverbs 30:17 - Matthew Poole's English Annotations on the Holy Bible

The eye that mocketh at his father; he that scorneth or derideth his parents, though it be but with a look or gesture, and much more when he breaks out into opprobrious words and actions. The ravens of the valley shall pick it out; he shall die an unnatural, and untimely, and ignominious death, and after death shall lie unburied, and so be exposed to the birds and beasts of prey, and, amongst others, to the crows or ravens, who use to feed upon dead carcasses, and particularly to pick out their eyes, as is noted by all sorts of writers; of which see my Latin Synopsis. He saith, the ravens oft he valley, either because they most delight in valleys, or with a particular respect unto that valley near Jerusalem, which was called the valley of dead bodies, Jeremiah 31:40, from the carcasses cast out there, to which therefore the ravens resorted in great numbers, according to their manner or, as others render, the ravens of the brooks, because they are of a hot and dry temper, and therefore delight in places adjacent to the brooks of water. The young eagle; which also preyeth upon dead carcasses and especially upon their eyes, as the ravens do, the reason being the same in both, whether it be the softness of that part which makes it more easy to them to take, or from the pleasant taste of it.