Revelation 9:3-5

3And out of the smoke locusts came down on the earth and were given power like that of scorpions of the earth. 4They were told not to harm the grass of the earth or any plant or tree, but only those people who did not have the seal of God on their foreheads. 5They were not allowed to kill them but only to torture them for five months. And the agony they suffered was like that of the sting of a scorpion when it strikes.