Revelation 9:1-5

Then the fifth angel sounded, and I saw a star from heaven which had fallen to the earth; and the key to the shaft of the abyss was given to him.

He opened the shaft of the abyss, and smoke ascended out of the shaft like the smoke of a great furnace; and the sun and the air were darkened from the smoke of the shaft.

Then out of the smoke came locusts upon the earth, and power was given them, as the scorpions of the earth have power.

They were told not to hurt the grass of the earth, nor any green thing, nor any tree, but only the people who do not have the seal of God on their foreheads.

And they were not permitted to kill anyone, but to torment for five months; and their torment was like the torment of a scorpion when it stings a person.