Revelation 9:1-4

Then the fifth angel sounded [his trumpet], and I saw a star (angelic being) that had fallen from heaven to the earth; and the key of the bottomless pit (abyss) was given to him (the star-angel). [Rev 20:1] He opened the bottomless pit, and smoke like the smoke of a great furnace flowed out of the pit; and the sun and the atmosphere were darkened by the smoke from the pit. [Gen 19:28; Ex 19:18; Joel 2:10] Then out of the smoke came locusts upon the earth, and power [to hurt] was given to them, like the power which the earth’s scorpions have. [Ex 10:12-15] They 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. [Ezek 9:4]