The first 4 trumpets set the stage for a demonic invasion upon this earth. When the 5th trumpet blows, the effects are being announced by the angel flying through the midst of heaven, saying with a loud voice: Woe, woe, woe, to the inhabitants of the earth, because of the remaining blasts of the trumpet of the three angels who are about to sound!
In the English translations of the Bible, we normally find the word Hell as the place of eternal torment. However, in the Hebrew text, which is the Old Testament and the Greek text, which is the New Testament, there are different words used.
While the locusts (demons) were literal, the pit is literal, the fire is literal and the torture is literal. How these demons do their work, we don’t know, but we do know that John observed a war-like, attacking creature. These creatures will bring a fear much greater then the sting of death, for men will desire to die but cannot.