Exodus 10:5

they shall cover, &c. This is literally true of locusts. As Thomson says of an invasion in the Lebanon district, -Their number was astounding; the whole face of the mountain was black with them" (Joel, p. 89).

face Heb. eye. A peculiar usage: so v.15, Numbers 22:5; Numbers 22:11.

they shall eat, &c. their voracity is insatiable. Cf. Joel 2:3, with the passage cited in the writer's note from a traveller, -On whatever spot they fall, the whole vegetable produce disappears. Nothing escapes them, from the leaves on the forest to the herbs on the plain."