Revelation 9:4-6

4They were told not to hurt the grass of the earth, nor any green thing, nor any tree, but [to hurt] only the people who do not have the seal (mark of ownership, protection) of God on their foreheads.

5They were not permitted to kill anyone, but to torment and cause them extreme pain for five months; and their torment was like the torment from a scorpion when it stings a man.

6And in those days people will seek death and will not find it; and they will long to die [to escape the pain], but [will discover that] death evades them.