Classified As "Clean"
According to the Levitical dietary laws (see Clean and Unclean), locusts were classified as "clean" for food (the author of this study does not recommend trying it):
"In those days came John The Baptist, preaching in the wilderness of Judea, "Repent, for the kingdom of heaven is at hand." For this is he who was spoken of by the prophet Isaiah when he said, "The voice of one crying in the wilderness: Prepare the way of The Lord, make His paths straight." Now John wore a garment of camel's hair, and a leather girdle around his waist; and his food was locusts and wild honey." (Matthew 3:1-4 RSV)
Plagues of Locusts
Locust plagues were sometimes used as agents of God's wrath against those who opposed Him:
"So Moses stretched forth his rod over the land of Egypt, and The Lord brought an east wind upon the land all that day and all that night; and when it was morning the east wind had brought the locusts. And the locusts came up over all the land of Egypt, and settled on the whole country of Egypt, such a dense swarm of locusts as had never been before, nor ever shall be again. For they covered the face of the whole land, so that the land was darkened, and they ate all the plants in the land and all the fruit of the trees which the hail had left; not a green thing remained, neither tree nor plant of the field, through all the land of Egypt." (Exodus 10:12-15 RSV)
Locust plagues were also sometimes used as agents of God's wrath against His own people when they were disobedient to Him:
Locusts were also used as symbols of end-time, armor-plated, missile-firing, flying war-machines that were not known to the writers of The Bible (see also The Seven Seals):
"Then from the smoke came locusts on the earth, and they were given power like the power of scorpions of the earth; they were told not to harm the grass of the earth or any green growth or any tree, but only those of mankind who have not the seal of God upon their foreheads; they were allowed to torture them for five months, but not to kill them, and their torture was like the torture of a scorpion, when it stings a man. And in those days men will seek death and will not find it; they will long to die, and death will fly from them."
"In appearance the locusts were like horses arrayed for battle; on their heads were what looked like crowns of gold; their faces were like human faces, their hair like women's hair, and their teeth like lions' teeth; they had scales like iron breastplates, and the noise of their wings was like the noise of many chariots with horses rushing into battle. They have tails like scorpions, and stings, and their power of hurting men for five months lies in their tails. They have as king over them the angel of the bottomless pit; his name in Hebrew is Abaddon, and in Greek he is called Apollyon." (Revelation 9:1-11 RSV)
Fact Finder: Were swarms of locusts also used as a symbol of great multitudes of people?