This chapter in Revelation almost reads like science fiction. Great woe is declared to those on earth at the time of the 5th trumpet. At that time, the destruction will not be in the natural realm, but the human, and it comes from spiritual and demonic beings. Though God allows the torment, He at first forbids death. How long-suffering He is! But still people will refuse to repent and turn to Him. These judgments should cause people to repent, but they do not.
What is the lesson for us? What are we worshipping? Anything that is an idol in our hearts needs to be repented of. It can never help us, only hurt us, and pull us away from God.