All fowls that creep should rather be rendered all winged creeping things, that is, all flying insects. None are allowed except the Saltatoria, or locust family. The word translated beetle signifies a sort of locust, like the other three words.
That the locust was a regular article of food in Palestine is amply proved. "It is well known that locusts were eaten by many of the nations of antiquity, both in Asia and Africa, and even the ancient Greek thought the cicadas very agreeable in flavour (Arist.
'Hist. An.,' 5:30). In Arabia they are sold in the market, sometimes strung upon cords, sometimes by measure, and they are also dried and kept in bags for winter use.… They are generally cooked over hot coals, or on a plate, or in an oven, or stewed in butter, and eaten either with salt or with spice and vinegar, the head, wings, and feet being thrown away.
They are also boiled in salt and water, and eaten with salt or butter. Another process is to dry them thoroughly, and then grind them into meal, and make cakes of them" (Keil). (Cf. Matthew 3:4.) The expression goeth upon all four, means groveling or going in a horizontal position, in contrast with two-legged birds, just spoken of.